CWE-476
AllowedNULL Pointer Dereference
Abstraction: Base · Status: Stable
The product dereferences a pointer that it expects to be valid but is NULL.
6325 vulnerabilities reference this CWE, most recent first.
GHSA-8775-7CPF-RM3F
Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-14 21:30In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: Don't finalize CSA in IBSS mode if state is disconnected
When we are not connected to a channel, sending channel "switch" announcement doesn't make any sense.
The BSS list is empty in that case. This causes the for loop in cfg80211_get_bss() to be bypassed, so the function returns NULL (check line 1424 of net/wireless/scan.c), causing the WARN_ON() in ieee80211_ibss_csa_beacon() to get triggered (check line 500 of net/mac80211/ibss.c), which was consequently reported on the syzkaller dashboard.
Thus, check if we have an existing connection before generating the CSA beacon in ieee80211_ibss_finish_csa().
{
"affected": [],
"aliases": [
"CVE-2022-49942"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-06-18T11:15:21Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: Don\u0027t finalize CSA in IBSS mode if state is disconnected\n\nWhen we are not connected to a channel, sending channel \"switch\"\nannouncement doesn\u0027t make any sense.\n\nThe BSS list is empty in that case. This causes the for loop in\ncfg80211_get_bss() to be bypassed, so the function returns NULL\n(check line 1424 of net/wireless/scan.c), causing the WARN_ON()\nin ieee80211_ibss_csa_beacon() to get triggered (check line 500\nof net/mac80211/ibss.c), which was consequently reported on the\nsyzkaller dashboard.\n\nThus, check if we have an existing connection before generating\nthe CSA beacon in ieee80211_ibss_finish_csa().",
"id": "GHSA-8775-7cpf-rm3f",
"modified": "2025-11-14T21:30:27Z",
"published": "2025-06-18T12:30:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49942"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/15bc8966b6d3a5b9bfe4c9facfa02f2b69b1e5f0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1691a48aef0a82d1754b9853dae7e3f5cacdf70b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/552ba102a6898630a7d16887f29e606d6fabe508"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/66689c5c02acd4d76c28498fe220998610aec61e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/864e280cb3a9a0f5212b16ef5057c4e692f7039d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cdb9a8da9b84800eb15506cd9363cf0cf059e677"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d9eb37db6a28b59a95a3461450ee209654c5f95b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dd649b49219a0388cc10fc40e4c2ea681566a780"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-8788-537Q-VR5M
Vulnerability from github – Published: 2026-05-12 18:30 – Updated: 2026-05-12 18:30Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service locally.
{
"affected": [],
"aliases": [
"CVE-2026-40401"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-05-12T18:17:17Z",
"severity": "HIGH"
},
"details": "Null pointer dereference in Windows TCP/IP allows an unauthorized attacker to deny service locally.",
"id": "GHSA-8788-537q-vr5m",
"modified": "2026-05-12T18:30:45Z",
"published": "2026-05-12T18:30:45Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40401"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40401"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-878W-3C3R-W7J4
Vulnerability from github – Published: 2022-05-24 19:15 – Updated: 2022-05-24 19:15An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function node::ObjNode::Value() located in objnode.cpp. It allows an attacker to cause Denial of Service.
{
"affected": [],
"aliases": [
"CVE-2021-39538"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-09-20T16:15:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function node::ObjNode::Value() located in objnode.cpp. It allows an attacker to cause Denial of Service.",
"id": "GHSA-878w-3c3r-w7j4",
"modified": "2022-05-24T19:15:09Z",
"published": "2022-05-24T19:15:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39538"
},
{
"type": "WEB",
"url": "https://github.com/leonhad/pdftools/issues/4"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-87F2-G6CV-PJH2
Vulnerability from github – Published: 2022-05-14 02:18 – Updated: 2025-04-20 03:46The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted system call.
{
"affected": [],
"aliases": [
"CVE-2017-15299"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-10-14T23:29:00Z",
"severity": "MODERATE"
},
"details": "The KEYS subsystem in the Linux kernel through 4.13.7 mishandles use of add_key for a key that already exists but is uninstantiated, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted system call.",
"id": "GHSA-87f2-g6cv-pjh2",
"modified": "2025-04-20T03:46:50Z",
"published": "2022-05-14T02:18:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-15299"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2018:0654"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1498016"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html"
},
{
"type": "WEB",
"url": "https://marc.info/?t=150654188100001\u0026r=1\u0026w=2"
},
{
"type": "WEB",
"url": "https://marc.info/?t=150783958600011\u0026r=1\u0026w=2"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3798-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/3798-2"
},
{
"type": "WEB",
"url": "https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1499828.html"
},
{
"type": "WEB",
"url": "https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1499828.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-87G6-M6V4-RM4W
Vulnerability from github – Published: 2022-05-24 17:02 – Updated: 2022-05-24 17:02relay_open in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of service (such as relay blockage) by triggering a NULL alloc_percpu result.
{
"affected": [],
"aliases": [
"CVE-2019-19462"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-11-30T01:15:00Z",
"severity": "MODERATE"
},
"details": "relay_open in kernel/relay.c in the Linux kernel through 5.4.1 allows local users to cause a denial of service (such as relay blockage) by triggering a NULL alloc_percpu result.",
"id": "GHSA-87g6-m6v4-rm4w",
"modified": "2022-05-24T17:02:27Z",
"published": "2022-05-24T17:02:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-19462"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html"
},
{
"type": "WEB",
"url": "https://lore.kernel.org/lkml/20191129013745.7168-1-dja@axtens.net"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210129-0004"
},
{
"type": "WEB",
"url": "https://syzkaller-ppc64.appspot.com/bug?id=1c09906c83a8ea811a9e318c2a4f8e243becc6f8"
},
{
"type": "WEB",
"url": "https://syzkaller-ppc64.appspot.com/bug?id=b05b4d005191cc375cdf848c3d4d980308d50531"
},
{
"type": "WEB",
"url": "https://syzkaller.appspot.com/bug?id=e4265490d26d6c01cd9bc79dc915ef0a1bf15046"
},
{
"type": "WEB",
"url": "https://syzkaller.appspot.com/bug?id=f4d1cb4330bd3ddf4a628332b4285407b2eedd7b"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4414-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4425-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4439-1"
},
{
"type": "WEB",
"url": "https://usn.ubuntu.com/4440-1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4698"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4699"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-87GH-WRHG-PFJQ
Vulnerability from github – Published: 2025-10-01 12:30 – Updated: 2026-01-20 18:31In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: Lag, fix failure to cancel delayed bond work
Commit 0d4e8ed139d8 ("net/mlx5: Lag, avoid lockdep warnings") accidentally removed a call to cancel delayed bond work thus it may cause queued delay to expire and fall on an already destroyed work queue.
Fix by restoring the call cancel_delayed_work_sync() before destroying the workqueue.
This prevents call trace such as this:
[ 329.230417] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 329.231444] #PF: supervisor write access in kernel mode [ 329.232233] #PF: error_code(0x0002) - not-present page [ 329.233007] PGD 0 P4D 0 [ 329.233476] Oops: 0002 [#1] SMP [ 329.234012] CPU: 5 PID: 145 Comm: kworker/u20:4 Tainted: G OE 6.0.0-rc5_mlnx #1 [ 329.235282] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 329.236868] Workqueue: mlx5_cmd_0000:08:00.1 cmd_work_handler [mlx5_core] [ 329.237886] RIP: 0010:_raw_spin_lock+0xc/0x20 [ 329.238585] Code: f0 0f b1 17 75 02 f3 c3 89 c6 e9 6f 3c 5f ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 31 c0 ba 01 00 00 00 0f b1 17 75 02 f3 c3 89 c6 e9 45 3c 5f ff 0f 1f 44 00 00 0f 1f [ 329.241156] RSP: 0018:ffffc900001b0e98 EFLAGS: 00010046 [ 329.241940] RAX: 0000000000000000 RBX: ffffffff82374ae0 RCX: 0000000000000000 [ 329.242954] RDX: 0000000000000001 RSI: 0000000000000014 RDI: 0000000000000000 [ 329.243974] RBP: ffff888106ccf000 R08: ffff8881004000c8 R09: ffff888100400000 [ 329.244990] R10: 0000000000000000 R11: ffffffff826669f8 R12: 0000000000002000 [ 329.246009] R13: 0000000000000005 R14: ffff888100aa7ce0 R15: ffff88852ca80000 [ 329.247030] FS: 0000000000000000(0000) GS:ffff88852ca80000(0000) knlGS:0000000000000000 [ 329.248260] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 329.249111] CR2: 0000000000000000 CR3: 000000016d675001 CR4: 0000000000770ee0 [ 329.250133] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 329.251152] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 329.252176] PKRU: 55555554
{
"affected": [],
"aliases": [
"CVE-2022-50441"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-01T12:15:36Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Lag, fix failure to cancel delayed bond work\n\nCommit 0d4e8ed139d8 (\"net/mlx5: Lag, avoid lockdep warnings\")\naccidentally removed a call to cancel delayed bond work thus it may\ncause queued delay to expire and fall on an already destroyed work\nqueue.\n\nFix by restoring the call cancel_delayed_work_sync() before\ndestroying the workqueue.\n\nThis prevents call trace such as this:\n\n[ 329.230417] BUG: kernel NULL pointer dereference, address: 0000000000000000\n [ 329.231444] #PF: supervisor write access in kernel mode\n [ 329.232233] #PF: error_code(0x0002) - not-present page\n [ 329.233007] PGD 0 P4D 0\n [ 329.233476] Oops: 0002 [#1] SMP\n [ 329.234012] CPU: 5 PID: 145 Comm: kworker/u20:4 Tainted: G OE 6.0.0-rc5_mlnx #1\n [ 329.235282] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n [ 329.236868] Workqueue: mlx5_cmd_0000:08:00.1 cmd_work_handler [mlx5_core]\n [ 329.237886] RIP: 0010:_raw_spin_lock+0xc/0x20\n [ 329.238585] Code: f0 0f b1 17 75 02 f3 c3 89 c6 e9 6f 3c 5f ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 31 c0 ba 01 00 00 00 \u003cf0\u003e 0f b1 17 75 02 f3 c3 89 c6 e9 45 3c 5f ff 0f 1f 44 00 00 0f 1f\n [ 329.241156] RSP: 0018:ffffc900001b0e98 EFLAGS: 00010046\n [ 329.241940] RAX: 0000000000000000 RBX: ffffffff82374ae0 RCX: 0000000000000000\n [ 329.242954] RDX: 0000000000000001 RSI: 0000000000000014 RDI: 0000000000000000\n [ 329.243974] RBP: ffff888106ccf000 R08: ffff8881004000c8 R09: ffff888100400000\n [ 329.244990] R10: 0000000000000000 R11: ffffffff826669f8 R12: 0000000000002000\n [ 329.246009] R13: 0000000000000005 R14: ffff888100aa7ce0 R15: ffff88852ca80000\n [ 329.247030] FS: 0000000000000000(0000) GS:ffff88852ca80000(0000) knlGS:0000000000000000\n [ 329.248260] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n [ 329.249111] CR2: 0000000000000000 CR3: 000000016d675001 CR4: 0000000000770ee0\n [ 329.250133] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n [ 329.251152] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n [ 329.252176] PKRU: 55555554",
"id": "GHSA-87gh-wrhg-pfjq",
"modified": "2026-01-20T18:31:51Z",
"published": "2025-10-01T12:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50441"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4d1c1379d71777ddeda3e54f8fc26e9ecbfd1009"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5df57bb04e91add52fb67e226209df9a17f06a89"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8f1b8b3133504bf9125ee507ddcc3a8fb41a41f0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-87H5-VMX9-F2FF
Vulnerability from github – Published: 2022-05-14 03:07 – Updated: 2022-05-14 03:07The swri_audio_convert function in audioconvert.c in FFmpeg libswresample through 3.0.101, as used in FFmpeg 3.4.1, aubio 0.4.6, and other products, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted audio file.
{
"affected": [],
"aliases": [
"CVE-2017-17555"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-12-12T01:29:00Z",
"severity": "MODERATE"
},
"details": "The swri_audio_convert function in audioconvert.c in FFmpeg libswresample through 3.0.101, as used in FFmpeg 3.4.1, aubio 0.4.6, and other products, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted audio file.",
"id": "GHSA-87h5-vmx9-f2ff",
"modified": "2022-05-14T03:07:24Z",
"published": "2022-05-14T03:07:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-17555"
},
{
"type": "WEB",
"url": "https://github.com/IvanCql/vulnerability/blob/master/An%20NULL%20pointer%20dereference(DoS)%20Vulnerability%20was%20found%20in%20function%20swri_audio_convert%20of%20ffmpeg%20libswresample.md"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-87J2-W75F-PVCG
Vulnerability from github – Published: 2022-05-17 03:37 – Updated: 2022-05-17 03:37security/keys/big_key.c in the Linux kernel before 4.8.7 mishandles unsuccessful crypto registration in conjunction with successful key-type registration, which allows local users to cause a denial of service (NULL pointer dereference and panic) or possibly have unspecified other impact via a crafted application that uses the big_key data type.
{
"affected": [],
"aliases": [
"CVE-2016-9313"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2016-11-28T03:59:00Z",
"severity": "HIGH"
},
"details": "security/keys/big_key.c in the Linux kernel before 4.8.7 mishandles unsuccessful crypto registration in conjunction with successful key-type registration, which allows local users to cause a denial of service (NULL pointer dereference and panic) or possibly have unspecified other impact via a crafted application that uses the big_key data type.",
"id": "GHSA-87j2-w75f-pvcg",
"modified": "2022-05-17T03:37:21Z",
"published": "2022-05-17T03:37:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-9313"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb"
},
{
"type": "WEB",
"url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7df3e59c3d1df4f87fe874c7956ef7a3d2f4d5fb"
},
{
"type": "WEB",
"url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.7"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2016/07/22/1"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/94546"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-87J6-6JC2-H53Q
Vulnerability from github – Published: 2023-03-01 21:30 – Updated: 2023-03-13 15:30In the Linux kernel before 5.16.3, drivers/scsi/ufs/ufs-mediatek.c misinterprets the regulator_get return value (expects it to be NULL in the error case, whereas it is actually an error pointer).
{
"affected": [],
"aliases": [
"CVE-2023-23001"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-01T20:15:00Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel before 5.16.3, drivers/scsi/ufs/ufs-mediatek.c misinterprets the regulator_get return value (expects it to be NULL in the error case, whereas it is actually an error pointer).",
"id": "GHSA-87j6-6jc2-h53q",
"modified": "2023-03-13T15:30:19Z",
"published": "2023-03-01T21:30:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-23001"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/3ba880a12df5aa4488c18281701b5b1bc3d4531a"
},
{
"type": "WEB",
"url": "https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-87MC-CVFV-8R2W
Vulnerability from github – Published: 2022-05-24 17:37 – Updated: 2022-09-03 00:00There's a flaw in bfd_pef_parse_function_stubs of bfd/pef.c in binutils which could allow an attacker who is able to submit a crafted file to be processed by objdump to cause a NULL pointer dereference. The greatest threat of this flaw is to application availability. This flaw affects binutils versions prior to 2.34.
{
"affected": [],
"aliases": [
"CVE-2020-35507"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-01-04T15:15:00Z",
"severity": "MODERATE"
},
"details": "There\u0027s a flaw in bfd_pef_parse_function_stubs of bfd/pef.c in binutils which could allow an attacker who is able to submit a crafted file to be processed by objdump to cause a NULL pointer dereference. The greatest threat of this flaw is to application availability. This flaw affects binutils versions prior to 2.34.",
"id": "GHSA-87mc-cvfv-8r2w",
"modified": "2022-09-03T00:00:19Z",
"published": "2022-05-24T17:37:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-35507"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1911691"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202107-24"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210212-0007"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-56
For any pointers that could have been modified or provided from a function that can return NULL, check the pointer for NULL before use. When working with a multithreaded or otherwise asynchronous environment, ensure that proper locking APIs are used to lock before the check, and unlock when it has finished [REF-1484].
Mitigation
Select a programming language that is not susceptible to these issues.
Mitigation
Check the results of all functions that return a value and verify that the value is non-null before acting upon it.
Mitigation
Identify all variables and data stores that receive information from external sources, and apply input validation to make sure that they are only initialized to expected values.
Mitigation
Explicitly initialize all variables and other data stores, either during declaration or just before the first usage.
No CAPEC attack patterns related to this CWE.