CVE-2023-53368 (GCVE-0-2023-53368)
Vulnerability from cvelistv5 – Published: 2025-09-17 14:56 – Updated: 2026-05-11 19:43
VLAI
EPSS
VEX
Title
tracing: Fix race issue between cpu buffer write and swap
Summary
In the Linux kernel, the following vulnerability has been resolved:
tracing: Fix race issue between cpu buffer write and swap
Warning happened in rb_end_commit() at code:
if (RB_WARN_ON(cpu_buffer, !local_read(&cpu_buffer->committing)))
WARNING: CPU: 0 PID: 139 at kernel/trace/ring_buffer.c:3142
rb_commit+0x402/0x4a0
Call Trace:
ring_buffer_unlock_commit+0x42/0x250
trace_buffer_unlock_commit_regs+0x3b/0x250
trace_event_buffer_commit+0xe5/0x440
trace_event_buffer_reserve+0x11c/0x150
trace_event_raw_event_sched_switch+0x23c/0x2c0
__traceiter_sched_switch+0x59/0x80
__schedule+0x72b/0x1580
schedule+0x92/0x120
worker_thread+0xa0/0x6f0
It is because the race between writing event into cpu buffer and swapping
cpu buffer through file per_cpu/cpu0/snapshot:
Write on CPU 0 Swap buffer by per_cpu/cpu0/snapshot on CPU 1
-------- --------
tracing_snapshot_write()
[...]
ring_buffer_lock_reserve()
cpu_buffer = buffer->buffers[cpu]; // 1. Suppose find 'cpu_buffer_a';
[...]
rb_reserve_next_event()
[...]
ring_buffer_swap_cpu()
if (local_read(&cpu_buffer_a->committing))
goto out_dec;
if (local_read(&cpu_buffer_b->committing))
goto out_dec;
buffer_a->buffers[cpu] = cpu_buffer_b;
buffer_b->buffers[cpu] = cpu_buffer_a;
// 2. cpu_buffer has swapped here.
rb_start_commit(cpu_buffer);
if (unlikely(READ_ONCE(cpu_buffer->buffer)
!= buffer)) { // 3. This check passed due to 'cpu_buffer->buffer'
[...] // has not changed here.
return NULL;
}
cpu_buffer_b->buffer = buffer_a;
cpu_buffer_a->buffer = buffer_b;
[...]
// 4. Reserve event from 'cpu_buffer_a'.
ring_buffer_unlock_commit()
[...]
cpu_buffer = buffer->buffers[cpu]; // 5. Now find 'cpu_buffer_b' !!!
rb_commit(cpu_buffer)
rb_end_commit() // 6. WARN for the wrong 'committing' state !!!
Based on above analysis, we can easily reproduce by following testcase:
``` bash
#!/bin/bash
dmesg -n 7
sysctl -w kernel.panic_on_warn=1
TR=/sys/kernel/tracing
echo 7 > ${TR}/buffer_size_kb
echo "sched:sched_switch" > ${TR}/set_event
while [ true ]; do
echo 1 > ${TR}/per_cpu/cpu0/snapshot
done &
while [ true ]; do
echo 1 > ${TR}/per_cpu/cpu0/snapshot
done &
while [ true ]; do
echo 1 > ${TR}/per_cpu/cpu0/snapshot
done &
```
To fix it, IIUC, we can use smp_call_function_single() to do the swap on
the target cpu where the buffer is located, so that above race would be
avoided.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 18:46 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
f1affcaaa861f27752a769f889bf1486ebd301fe , < 90e037cabc2c2dfc39b3dd9c5b22ea91f995539a
(git)
Affected: f1affcaaa861f27752a769f889bf1486ebd301fe , < c5d30d6aa83d99fba8dfdd9cf6c4e4e7a63244db (git) Affected: f1affcaaa861f27752a769f889bf1486ebd301fe , < 6182318ac04648b46db9d441fd7d696337fcdd0b (git) Affected: f1affcaaa861f27752a769f889bf1486ebd301fe , < 74c85396bd73eca80b96510b4edf93b9a3aff75f (git) Affected: f1affcaaa861f27752a769f889bf1486ebd301fe , < 89c89da92a60028013f9539be0dcce7e44405a43 (git) Affected: f1affcaaa861f27752a769f889bf1486ebd301fe , < 37ca1b686078b00cc4ffa008e2190615f7709b5d (git) Affected: f1affcaaa861f27752a769f889bf1486ebd301fe , < 3163f635b20e9e1fb4659e74f47918c9dddfe64e (git) |
guessed | |
| Linux | Linux |
Affected:
3.10
Unaffected: 0 , < 3.10 (semver) Unaffected: 5.4.257 , ≤ 5.4.* (semver) Unaffected: 5.10.195 , ≤ 5.10.* (semver) Unaffected: 5.15.132 , ≤ 5.15.* (semver) Unaffected: 6.1.53 , ≤ 6.1.* (semver) Unaffected: 6.4.16 , ≤ 6.4.* (semver) Unaffected: 6.5.3 , ≤ 6.5.* (semver) Unaffected: 6.6 , ≤ * (original_commit_for_fix) |
guessed |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix race issue between cpu buffer write and swap\n\nWarning happened in rb_end_commit() at code:\n\tif (RB_WARN_ON(cpu_buffer, !local_read(\u0026cpu_buffer-\u003ecommitting)))\n\n WARNING: CPU: 0 PID: 139 at kernel/trace/ring_buffer.c:3142\n\trb_commit+0x402/0x4a0\n Call Trace:\n ring_buffer_unlock_commit+0x42/0x250\n trace_buffer_unlock_commit_regs+0x3b/0x250\n trace_event_buffer_commit+0xe5/0x440\n trace_event_buffer_reserve+0x11c/0x150\n trace_event_raw_event_sched_switch+0x23c/0x2c0\n __traceiter_sched_switch+0x59/0x80\n __schedule+0x72b/0x1580\n schedule+0x92/0x120\n worker_thread+0xa0/0x6f0\n\nIt is because the race between writing event into cpu buffer and swapping\ncpu buffer through file per_cpu/cpu0/snapshot:\n\n Write on CPU 0 Swap buffer by per_cpu/cpu0/snapshot on CPU 1\n -------- --------\n tracing_snapshot_write()\n [...]\n\n ring_buffer_lock_reserve()\n cpu_buffer = buffer-\u003ebuffers[cpu]; // 1. Suppose find \u0027cpu_buffer_a\u0027;\n [...]\n rb_reserve_next_event()\n [...]\n\n ring_buffer_swap_cpu()\n if (local_read(\u0026cpu_buffer_a-\u003ecommitting))\n goto out_dec;\n if (local_read(\u0026cpu_buffer_b-\u003ecommitting))\n goto out_dec;\n buffer_a-\u003ebuffers[cpu] = cpu_buffer_b;\n buffer_b-\u003ebuffers[cpu] = cpu_buffer_a;\n // 2. cpu_buffer has swapped here.\n\n rb_start_commit(cpu_buffer);\n if (unlikely(READ_ONCE(cpu_buffer-\u003ebuffer)\n != buffer)) { // 3. This check passed due to \u0027cpu_buffer-\u003ebuffer\u0027\n [...] // has not changed here.\n return NULL;\n }\n cpu_buffer_b-\u003ebuffer = buffer_a;\n cpu_buffer_a-\u003ebuffer = buffer_b;\n [...]\n\n // 4. Reserve event from \u0027cpu_buffer_a\u0027.\n\n ring_buffer_unlock_commit()\n [...]\n cpu_buffer = buffer-\u003ebuffers[cpu]; // 5. Now find \u0027cpu_buffer_b\u0027 !!!\n rb_commit(cpu_buffer)\n rb_end_commit() // 6. WARN for the wrong \u0027committing\u0027 state !!!\n\nBased on above analysis, we can easily reproduce by following testcase:\n ``` bash\n #!/bin/bash\n\n dmesg -n 7\n sysctl -w kernel.panic_on_warn=1\n TR=/sys/kernel/tracing\n echo 7 \u003e ${TR}/buffer_size_kb\n echo \"sched:sched_switch\" \u003e ${TR}/set_event\n while [ true ]; do\n echo 1 \u003e ${TR}/per_cpu/cpu0/snapshot\n done \u0026\n while [ true ]; do\n echo 1 \u003e ${TR}/per_cpu/cpu0/snapshot\n done \u0026\n while [ true ]; do\n echo 1 \u003e ${TR}/per_cpu/cpu0/snapshot\n done \u0026\n ```\n\nTo fix it, IIUC, we can use smp_call_function_single() to do the swap on\nthe target cpu where the buffer is located, so that above race would be\navoided."
}
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"title": "tracing: Fix race issue between cpu buffer write and swap",
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"datePublished": "2025-09-17T14:56:56.752Z",
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"nvd": "{\"cve\":{\"id\":\"CVE-2023-53368\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-17T15:15:41.220\",\"lastModified\":\"2026-06-17T06:45:07.260\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntracing: Fix race issue between cpu buffer write and swap\\n\\nWarning happened in rb_end_commit() at code:\\n\\tif (RB_WARN_ON(cpu_buffer, !local_read(\u0026cpu_buffer-\u003ecommitting)))\\n\\n WARNING: CPU: 0 PID: 139 at kernel/trace/ring_buffer.c:3142\\n\\trb_commit+0x402/0x4a0\\n Call Trace:\\n ring_buffer_unlock_commit+0x42/0x250\\n trace_buffer_unlock_commit_regs+0x3b/0x250\\n trace_event_buffer_commit+0xe5/0x440\\n trace_event_buffer_reserve+0x11c/0x150\\n trace_event_raw_event_sched_switch+0x23c/0x2c0\\n __traceiter_sched_switch+0x59/0x80\\n __schedule+0x72b/0x1580\\n schedule+0x92/0x120\\n worker_thread+0xa0/0x6f0\\n\\nIt is because the race between writing event into cpu buffer and swapping\\ncpu buffer through file per_cpu/cpu0/snapshot:\\n\\n Write on CPU 0 Swap buffer by per_cpu/cpu0/snapshot on CPU 1\\n -------- --------\\n tracing_snapshot_write()\\n [...]\\n\\n ring_buffer_lock_reserve()\\n cpu_buffer = buffer-\u003ebuffers[cpu]; // 1. Suppose find \u0027cpu_buffer_a\u0027;\\n [...]\\n rb_reserve_next_event()\\n [...]\\n\\n ring_buffer_swap_cpu()\\n if (local_read(\u0026cpu_buffer_a-\u003ecommitting))\\n goto out_dec;\\n if (local_read(\u0026cpu_buffer_b-\u003ecommitting))\\n goto out_dec;\\n buffer_a-\u003ebuffers[cpu] = cpu_buffer_b;\\n buffer_b-\u003ebuffers[cpu] = cpu_buffer_a;\\n // 2. cpu_buffer has swapped here.\\n\\n rb_start_commit(cpu_buffer);\\n if (unlikely(READ_ONCE(cpu_buffer-\u003ebuffer)\\n != buffer)) { // 3. This check passed due to \u0027cpu_buffer-\u003ebuffer\u0027\\n [...] // has not changed here.\\n return NULL;\\n }\\n cpu_buffer_b-\u003ebuffer = buffer_a;\\n cpu_buffer_a-\u003ebuffer = buffer_b;\\n [...]\\n\\n // 4. Reserve event from \u0027cpu_buffer_a\u0027.\\n\\n ring_buffer_unlock_commit()\\n [...]\\n cpu_buffer = buffer-\u003ebuffers[cpu]; // 5. Now find \u0027cpu_buffer_b\u0027 !!!\\n rb_commit(cpu_buffer)\\n rb_end_commit() // 6. WARN for the wrong \u0027committing\u0027 state !!!\\n\\nBased on above analysis, we can easily reproduce by following testcase:\\n ``` bash\\n #!/bin/bash\\n\\n dmesg -n 7\\n sysctl -w kernel.panic_on_warn=1\\n TR=/sys/kernel/tracing\\n echo 7 \u003e ${TR}/buffer_size_kb\\n echo \\\"sched:sched_switch\\\" \u003e ${TR}/set_event\\n while [ true ]; do\\n echo 1 \u003e ${TR}/per_cpu/cpu0/snapshot\\n done \u0026\\n while [ true ]; do\\n echo 1 \u003e ${TR}/per_cpu/cpu0/snapshot\\n done \u0026\\n while [ true ]; do\\n echo 1 \u003e ${TR}/per_cpu/cpu0/snapshot\\n done \u0026\\n ```\\n\\nTo fix it, IIUC, we can use smp_call_function_single() to do the swap on\\nthe target cpu where the buffer is located, so that above race would be\\navoided.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"kernel/trace/trace.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f1affcaaa861f27752a769f889bf1486ebd301fe\",\"lessThan\":\"90e037cabc2c2dfc39b3dd9c5b22ea91f995539a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1affcaaa861f27752a769f889bf1486ebd301fe\",\"lessThan\":\"c5d30d6aa83d99fba8dfdd9cf6c4e4e7a63244db\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1affcaaa861f27752a769f889bf1486ebd301fe\",\"lessThan\":\"6182318ac04648b46db9d441fd7d696337fcdd0b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1affcaaa861f27752a769f889bf1486ebd301fe\",\"lessThan\":\"74c85396bd73eca80b96510b4edf93b9a3aff75f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1affcaaa861f27752a769f889bf1486ebd301fe\",\"lessThan\":\"89c89da92a60028013f9539be0dcce7e44405a43\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1affcaaa861f27752a769f889bf1486ebd301fe\",\"lessThan\":\"37ca1b686078b00cc4ffa008e2190615f7709b5d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f1affcaaa861f27752a769f889bf1486ebd301fe\",\"lessThan\":\"3163f635b20e9e1fb4659e74f47918c9dddfe64e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"kernel/trace/trace.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.257\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.195\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.132\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.53\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.4.16\",\"lessThanOrEqual\":\"6.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5.3\",\"lessThanOrEqual\":\"6.5.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-01-14T18:46:08.777326Z\",\"id\":\"CVE-2023-53368\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.10\",\"versionEndExcluding\":\"5.4.257\",\"matchCriteriaId\":\"E18B639E-81C4-4BDD-94EB-C7CD0F7B989C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.195\",\"matchCriteriaId\":\"C385B650-53DB-4BFB-83D1-1D8FADF653EF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.132\",\"matchCriteriaId\":\"5913891D-409A-4EEC-9231-F2EF5A493BC7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.53\",\"matchCriteriaId\":\"B20754AF-3B8C-4574-A70D-EC24933810E5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.4.16\",\"matchCriteriaId\":\"C3039EA3-F6CA-43EF-9F17-81A7EC6841EF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.5\",\"versionEndExcluding\":\"6.5.3\",\"matchCriteriaId\":\"880C803A-BEAE-4DA0-8A59-AC023F7B4EE3\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3163f635b20e9e1fb4659e74f47918c9dddfe64e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/37ca1b686078b00cc4ffa008e2190615f7709b5d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6182318ac04648b46db9d441fd7d696337fcdd0b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/74c85396bd73eca80b96510b4edf93b9a3aff75f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/89c89da92a60028013f9539be0dcce7e44405a43\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/90e037cabc2c2dfc39b3dd9c5b22ea91f995539a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c5d30d6aa83d99fba8dfdd9cf6c4e4e7a63244db\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-29T22:19:36+00:00",
"cve": "CVE-2023-53368",
"id": "CVE-2023-53368",
"initial_release_date": "2023-01-01T00:00:00+00:00",
"product_status:known_affected": "184",
"product_status:known_not_affected": "90",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: tracing: Fix race issue between cpu buffer write and swap",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53368.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T13:59:22Z",
"cve": "CVE-2023-53368",
"id": "CVE-2023-53368",
"initial_release_date": "2025-09-18T23:38:38Z",
"product_status:known_affected": "534",
"product_status:known_not_affected": "15",
"product_status:recommended": "539",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-53368",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53368.json",
"version": "56"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.7, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-53368\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T18:46:08.777326Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-362\", \"description\": \"CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T18:46:04.570Z\"}}], \"cna\": {\"title\": \"tracing: Fix race issue between cpu buffer write and swap\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"f1affcaaa861f27752a769f889bf1486ebd301fe\", \"lessThan\": \"90e037cabc2c2dfc39b3dd9c5b22ea91f995539a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f1affcaaa861f27752a769f889bf1486ebd301fe\", \"lessThan\": \"c5d30d6aa83d99fba8dfdd9cf6c4e4e7a63244db\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f1affcaaa861f27752a769f889bf1486ebd301fe\", \"lessThan\": \"6182318ac04648b46db9d441fd7d696337fcdd0b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f1affcaaa861f27752a769f889bf1486ebd301fe\", \"lessThan\": \"74c85396bd73eca80b96510b4edf93b9a3aff75f\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f1affcaaa861f27752a769f889bf1486ebd301fe\", \"lessThan\": \"89c89da92a60028013f9539be0dcce7e44405a43\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f1affcaaa861f27752a769f889bf1486ebd301fe\", \"lessThan\": \"37ca1b686078b00cc4ffa008e2190615f7709b5d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"f1affcaaa861f27752a769f889bf1486ebd301fe\", \"lessThan\": \"3163f635b20e9e1fb4659e74f47918c9dddfe64e\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/trace/trace.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.257\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.195\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.132\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.53\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.4.16\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.4.*\"}, {\"status\": \"unaffected\", \"version\": \"6.5.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.5.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/trace/trace.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/90e037cabc2c2dfc39b3dd9c5b22ea91f995539a\"}, {\"url\": \"https://git.kernel.org/stable/c/c5d30d6aa83d99fba8dfdd9cf6c4e4e7a63244db\"}, {\"url\": \"https://git.kernel.org/stable/c/6182318ac04648b46db9d441fd7d696337fcdd0b\"}, {\"url\": \"https://git.kernel.org/stable/c/74c85396bd73eca80b96510b4edf93b9a3aff75f\"}, {\"url\": \"https://git.kernel.org/stable/c/89c89da92a60028013f9539be0dcce7e44405a43\"}, {\"url\": \"https://git.kernel.org/stable/c/37ca1b686078b00cc4ffa008e2190615f7709b5d\"}, {\"url\": \"https://git.kernel.org/stable/c/3163f635b20e9e1fb4659e74f47918c9dddfe64e\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntracing: Fix race issue between cpu buffer write and swap\\n\\nWarning happened in rb_end_commit() at code:\\n\\tif (RB_WARN_ON(cpu_buffer, !local_read(\u0026cpu_buffer-\u003ecommitting)))\\n\\n WARNING: CPU: 0 PID: 139 at kernel/trace/ring_buffer.c:3142\\n\\trb_commit+0x402/0x4a0\\n Call Trace:\\n ring_buffer_unlock_commit+0x42/0x250\\n trace_buffer_unlock_commit_regs+0x3b/0x250\\n trace_event_buffer_commit+0xe5/0x440\\n trace_event_buffer_reserve+0x11c/0x150\\n trace_event_raw_event_sched_switch+0x23c/0x2c0\\n __traceiter_sched_switch+0x59/0x80\\n __schedule+0x72b/0x1580\\n schedule+0x92/0x120\\n worker_thread+0xa0/0x6f0\\n\\nIt is because the race between writing event into cpu buffer and swapping\\ncpu buffer through file per_cpu/cpu0/snapshot:\\n\\n Write on CPU 0 Swap buffer by per_cpu/cpu0/snapshot on CPU 1\\n -------- --------\\n tracing_snapshot_write()\\n [...]\\n\\n ring_buffer_lock_reserve()\\n cpu_buffer = buffer-\u003ebuffers[cpu]; // 1. Suppose find \u0027cpu_buffer_a\u0027;\\n [...]\\n rb_reserve_next_event()\\n [...]\\n\\n ring_buffer_swap_cpu()\\n if (local_read(\u0026cpu_buffer_a-\u003ecommitting))\\n goto out_dec;\\n if (local_read(\u0026cpu_buffer_b-\u003ecommitting))\\n goto out_dec;\\n buffer_a-\u003ebuffers[cpu] = cpu_buffer_b;\\n buffer_b-\u003ebuffers[cpu] = cpu_buffer_a;\\n // 2. cpu_buffer has swapped here.\\n\\n rb_start_commit(cpu_buffer);\\n if (unlikely(READ_ONCE(cpu_buffer-\u003ebuffer)\\n != buffer)) { // 3. This check passed due to \u0027cpu_buffer-\u003ebuffer\u0027\\n [...] // has not changed here.\\n return NULL;\\n }\\n cpu_buffer_b-\u003ebuffer = buffer_a;\\n cpu_buffer_a-\u003ebuffer = buffer_b;\\n [...]\\n\\n // 4. Reserve event from \u0027cpu_buffer_a\u0027.\\n\\n ring_buffer_unlock_commit()\\n [...]\\n cpu_buffer = buffer-\u003ebuffers[cpu]; // 5. Now find \u0027cpu_buffer_b\u0027 !!!\\n rb_commit(cpu_buffer)\\n rb_end_commit() // 6. WARN for the wrong \u0027committing\u0027 state !!!\\n\\nBased on above analysis, we can easily reproduce by following testcase:\\n ``` bash\\n #!/bin/bash\\n\\n dmesg -n 7\\n sysctl -w kernel.panic_on_warn=1\\n TR=/sys/kernel/tracing\\n echo 7 \u003e ${TR}/buffer_size_kb\\n echo \\\"sched:sched_switch\\\" \u003e ${TR}/set_event\\n while [ true ]; do\\n echo 1 \u003e ${TR}/per_cpu/cpu0/snapshot\\n done \u0026\\n while [ true ]; do\\n echo 1 \u003e ${TR}/per_cpu/cpu0/snapshot\\n done \u0026\\n while [ true ]; do\\n echo 1 \u003e ${TR}/per_cpu/cpu0/snapshot\\n done \u0026\\n ```\\n\\nTo fix it, IIUC, we can use smp_call_function_single() to do the swap on\\nthe target cpu where the buffer is located, so that above race would be\\navoided.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.257\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.195\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.132\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.53\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.4.16\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5.3\", \"versionStartIncluding\": \"3.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6\", \"versionStartIncluding\": \"3.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T19:43:35.800Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2023-53368\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T19:43:35.800Z\", \"dateReserved\": \"2025-09-17T14:54:09.734Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-17T14:56:56.752Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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