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| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: Fix possible use-after-free in wdt_startup()\n\nThis module's remove path calls del_timer(). However, that function\ndoes not wait until the timer handler finishes. This means that the\ntimer handler may still be running after the driver's remove function\nhas finished, which would result in a use-after-free.\n\nFix by calling del_timer_sync(), which makes sure the timer handler\nhas finished, and unable to re-schedule itself." |
| } |
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| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "drivers/watchdog/sbc60xxwdt.c" |
| ], |
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| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "4.9.276", |
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| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
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| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
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| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/63a3dc24bd053792f84cb4eef0168b1266202a02" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/862f2b5a7c38762ac9e369daefbf361a91aca685" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/0ac50a76cf3cd63db000648b3b19f3f98b8aaa76" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/dc9403097be52d57a5c9c35efa9be79d166a78af" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/146cc288fb80c662c9c35e7bc58325d1ac0a7875" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/a397cb4576fc2fc802562418b3a50b8f67d60d31" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/b4ebf4a4692e84163a69444c70ad515de06e2259" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/8adbbe6c86bb13e14f8a19e036ae5f4f5661fd90" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/c08a6b31e4917034f0ed0cb457c3bb209576f542" |
| } |
| ], |
| "title": "watchdog: Fix possible use-after-free in wdt_startup()", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2021-47324", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
