CVE-2022-49094 (GCVE-0-2022-49094)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:54 – Updated: 2026-05-11 18:52
VLAI
Title
net/tls: fix slab-out-of-bounds bug in decrypt_internal
Summary
In the Linux kernel, the following vulnerability has been resolved: net/tls: fix slab-out-of-bounds bug in decrypt_internal The memory size of tls_ctx->rx.iv for AES128-CCM is 12 setting in tls_set_sw_offload(). The return value of crypto_aead_ivsize() for "ccm(aes)" is 16. So memcpy() require 16 bytes from 12 bytes memory space will trigger slab-out-of-bounds bug as following: ================================================================== BUG: KASAN: slab-out-of-bounds in decrypt_internal+0x385/0xc40 [tls] Read of size 16 at addr ffff888114e84e60 by task tls/10911 Call Trace: <TASK> dump_stack_lvl+0x34/0x44 print_report.cold+0x5e/0x5db ? decrypt_internal+0x385/0xc40 [tls] kasan_report+0xab/0x120 ? decrypt_internal+0x385/0xc40 [tls] kasan_check_range+0xf9/0x1e0 memcpy+0x20/0x60 decrypt_internal+0x385/0xc40 [tls] ? tls_get_rec+0x2e0/0x2e0 [tls] ? process_rx_list+0x1a5/0x420 [tls] ? tls_setup_from_iter.constprop.0+0x2e0/0x2e0 [tls] decrypt_skb_update+0x9d/0x400 [tls] tls_sw_recvmsg+0x3c8/0xb50 [tls] Allocated by task 10911: kasan_save_stack+0x1e/0x40 __kasan_kmalloc+0x81/0xa0 tls_set_sw_offload+0x2eb/0xa20 [tls] tls_setsockopt+0x68c/0x700 [tls] __sys_setsockopt+0xfe/0x1b0 Replace the crypto_aead_ivsize() with prot->iv_size + prot->salt_size when memcpy() iv value in TLS_1_3_VERSION scenario.
Severity
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f295b3ae9f5927e084bd5decdff82390e3471801 , < 2b7d14c105dd8f6412eda5a91e1e6154653731e3 (git)
Affected: f295b3ae9f5927e084bd5decdff82390e3471801 , < 589154d0f18945f41d138a5b4e49e518d294474b (git)
Affected: f295b3ae9f5927e084bd5decdff82390e3471801 , < 6e2f1b033b17dedda51d465861b69e58317d6343 (git)
Affected: f295b3ae9f5927e084bd5decdff82390e3471801 , < 29be1816cbab9a0dc6243120939fd10a92753756 (git)
Affected: f295b3ae9f5927e084bd5decdff82390e3471801 , < 2304660ab6c425df64d95301b601424c6a50f28b (git)
Affected: f295b3ae9f5927e084bd5decdff82390e3471801 , < 9381fe8c849cfbe50245ac01fc077554f6eaa0e2 (git)
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Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.189 , ≤ 5.4.* (semver)
Unaffected: 5.10.111 , ≤ 5.10.* (semver)
Unaffected: 5.15.34 , ≤ 5.15.* (semver)
Unaffected: 5.16.20 , ≤ 5.16.* (semver)
Unaffected: 5.17.3 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/tls: fix slab-out-of-bounds bug in decrypt_internal\n\nThe memory size of tls_ctx-\u003erx.iv for AES128-CCM is 12 setting in\ntls_set_sw_offload(). The return value of crypto_aead_ivsize()\nfor \"ccm(aes)\" is 16. So memcpy() require 16 bytes from 12 bytes\nmemory space will trigger slab-out-of-bounds bug as following:\n\n==================================================================\nBUG: KASAN: slab-out-of-bounds in decrypt_internal+0x385/0xc40 [tls]\nRead of size 16 at addr ffff888114e84e60 by task tls/10911\n\nCall Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x34/0x44\n print_report.cold+0x5e/0x5db\n ? decrypt_internal+0x385/0xc40 [tls]\n kasan_report+0xab/0x120\n ? decrypt_internal+0x385/0xc40 [tls]\n kasan_check_range+0xf9/0x1e0\n memcpy+0x20/0x60\n decrypt_internal+0x385/0xc40 [tls]\n ? tls_get_rec+0x2e0/0x2e0 [tls]\n ? process_rx_list+0x1a5/0x420 [tls]\n ? tls_setup_from_iter.constprop.0+0x2e0/0x2e0 [tls]\n decrypt_skb_update+0x9d/0x400 [tls]\n tls_sw_recvmsg+0x3c8/0xb50 [tls]\n\nAllocated by task 10911:\n kasan_save_stack+0x1e/0x40\n __kasan_kmalloc+0x81/0xa0\n tls_set_sw_offload+0x2eb/0xa20 [tls]\n tls_setsockopt+0x68c/0x700 [tls]\n __sys_setsockopt+0xfe/0x1b0\n\nReplace the crypto_aead_ivsize() with prot-\u003eiv_size + prot-\u003esalt_size\nwhen memcpy() iv value in TLS_1_3_VERSION scenario."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T18:52:59.154Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/589154d0f18945f41d138a5b4e49e518d294474b"
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        },
        {
          "url": "https://git.kernel.org/stable/c/9381fe8c849cfbe50245ac01fc077554f6eaa0e2"
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      ],
      "title": "net/tls: fix slab-out-of-bounds bug in decrypt_internal",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49094",
    "datePublished": "2025-02-26T01:54:48.163Z",
    "dateReserved": "2025-02-26T01:49:39.249Z",
    "dateUpdated": "2026-05-11T18:52:59.154Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49094",
      "date": "2026-07-16",
      "epss": "0.00238",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49094\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:00:46.747\",\"lastModified\":\"2026-06-17T05:17:03.807\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/tls: fix slab-out-of-bounds bug in decrypt_internal\\n\\nThe memory size of tls_ctx-\u003erx.iv for AES128-CCM is 12 setting in\\ntls_set_sw_offload(). The return value of crypto_aead_ivsize()\\nfor \\\"ccm(aes)\\\" is 16. So memcpy() require 16 bytes from 12 bytes\\nmemory space will trigger slab-out-of-bounds bug as following:\\n\\n==================================================================\\nBUG: KASAN: slab-out-of-bounds in decrypt_internal+0x385/0xc40 [tls]\\nRead of size 16 at addr ffff888114e84e60 by task tls/10911\\n\\nCall Trace:\\n \u003cTASK\u003e\\n dump_stack_lvl+0x34/0x44\\n print_report.cold+0x5e/0x5db\\n ? decrypt_internal+0x385/0xc40 [tls]\\n kasan_report+0xab/0x120\\n ? decrypt_internal+0x385/0xc40 [tls]\\n kasan_check_range+0xf9/0x1e0\\n memcpy+0x20/0x60\\n decrypt_internal+0x385/0xc40 [tls]\\n ? tls_get_rec+0x2e0/0x2e0 [tls]\\n ? process_rx_list+0x1a5/0x420 [tls]\\n ? tls_setup_from_iter.constprop.0+0x2e0/0x2e0 [tls]\\n decrypt_skb_update+0x9d/0x400 [tls]\\n tls_sw_recvmsg+0x3c8/0xb50 [tls]\\n\\nAllocated by task 10911:\\n kasan_save_stack+0x1e/0x40\\n __kasan_kmalloc+0x81/0xa0\\n tls_set_sw_offload+0x2eb/0xa20 [tls]\\n tls_setsockopt+0x68c/0x700 [tls]\\n __sys_setsockopt+0xfe/0x1b0\\n\\nReplace the crypto_aead_ivsize() with prot-\u003eiv_size + prot-\u003esalt_size\\nwhen memcpy() iv value in TLS_1_3_VERSION scenario.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/tls: corrige el error de slab fuera de los l\u00edmites en decrypt_internal El tama\u00f1o de memoria de tls_ctx-\u0026gt;rx.iv para AES128-CCM es 12 configurado en tls_set_sw_offload(). El valor de retorno de crypto_aead_ivsize() para \\\"ccm(aes)\\\" es 16. Por lo tanto, memcpy() requiere 16 bytes de 12 bytes de espacio de memoria y activar\u00e1 un error de losa fuera de los l\u00edmites de la siguiente manera: ========================================================================= ERROR: KASAN: losa fuera de los l\u00edmites en decrypt_internal+0x385/0xc40 [tls] Lectura de tama\u00f1o 16 en la direcci\u00f3n ffff888114e84e60 por la tarea tls/10911 Seguimiento de llamadas:  dump_stack_lvl+0x34/0x44 print_report.cold+0x5e/0x5db ? decrypt_internal+0x385/0xc40 [tls] kasan_report+0xab/0x120 ? decrypt_internal+0x385/0xc40 [tls] kasan_check_range+0xf9/0x1e0 memcpy+0x20/0x60 decrypt_internal+0x385/0xc40 [tls] ? tls_get_rec+0x2e0/0x2e0 [tls] ? process_rx_list+0x1a5/0x420 [tls] ? tls_setup_from_iter.constprop.0+0x2e0/0x2e0 [tls] decrypt_skb_update+0x9d/0x400 [tls] tls_sw_recvmsg+0x3c8/0xb50 [tls] Asignado por la tarea 10911: kasan_save_stack+0x1e/0x40 __kasan_kmalloc+0x81/0xa0 tls_set_sw_offload+0x2eb/0xa20 [tls] tls_setsockopt+0x68c/0x700 [tls] __sys_setsockopt+0xfe/0x1b0 Reemplace crypto_aead_ivsize() con prot-\u0026gt;iv_size + prot-\u0026gt;salt_size cuando el valor iv de memcpy() est\u00e9 en Escenario TLS_1_3_VERSION.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/tls/tls_sw.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f295b3ae9f5927e084bd5decdff82390e3471801\",\"lessThan\":\"2b7d14c105dd8f6412eda5a91e1e6154653731e3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295b3ae9f5927e084bd5decdff82390e3471801\",\"lessThan\":\"589154d0f18945f41d138a5b4e49e518d294474b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295b3ae9f5927e084bd5decdff82390e3471801\",\"lessThan\":\"6e2f1b033b17dedda51d465861b69e58317d6343\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295b3ae9f5927e084bd5decdff82390e3471801\",\"lessThan\":\"29be1816cbab9a0dc6243120939fd10a92753756\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295b3ae9f5927e084bd5decdff82390e3471801\",\"lessThan\":\"2304660ab6c425df64d95301b601424c6a50f28b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295b3ae9f5927e084bd5decdff82390e3471801\",\"lessThan\":\"9381fe8c849cfbe50245ac01fc077554f6eaa0e2\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/tls/tls_sw.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.189\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.111\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.34\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.16.20\",\"lessThanOrEqual\":\"5.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.3\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18\",\"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:L/PR:L/UI:N/S:U/C:H/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.2}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.2\",\"versionEndExcluding\":\"5.4.189\",\"matchCriteriaId\":\"1C388193-E002-43D1-9296-FE6FEC623F34\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.111\",\"matchCriteriaId\":\"96258501-7BCE-4C55-8A38-8AC9D327626D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.34\",\"matchCriteriaId\":\"D25878D3-7761-4E9F-8919-E92CD53896E0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.20\",\"matchCriteriaId\":\"ABBBA66E-0244-4621-966B-9790AF1EEB00\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17\",\"versionEndExcluding\":\"5.17.3\",\"matchCriteriaId\":\"AE420AC7-1E59-4398-B84F-71F4B4337762\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"6AD94161-84BB-42E6-9882-4FC0C42E9FC1\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2304660ab6c425df64d95301b601424c6a50f28b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/29be1816cbab9a0dc6243120939fd10a92753756\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2b7d14c105dd8f6412eda5a91e1e6154653731e3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/589154d0f18945f41d138a5b4e49e518d294474b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6e2f1b033b17dedda51d465861b69e58317d6343\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9381fe8c849cfbe50245ac01fc077554f6eaa0e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T20:57:50+00:00",
      "cve": "CVE-2022-49094",
      "id": "CVE-2022-49094",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "156",
      "product_status:known_not_affected": "118",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/tls: fix slab-out-of-bounds bug in decrypt_internal",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49094.json",
      "version": "3"
    }
  }
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.