GHSA-8F4H-JJH9-FXRX
Vulnerability from github – Published: 2024-08-26 12:31 – Updated: 2025-11-04 00:31In the Linux kernel, the following vulnerability has been resolved:
jfs: Fix shift-out-of-bounds in dbDiscardAG
When searching for the next smaller log2 block, BLKSTOL2() returned 0, causing shift exponent -1 to be negative.
This patch fixes the issue by exiting the loop directly when negative shift is found.
{
"affected": [],
"aliases": [
"CVE-2024-44938"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-26T12:15:05Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: Fix shift-out-of-bounds in dbDiscardAG\n\nWhen searching for the next smaller log2 block, BLKSTOL2() returned 0,\ncausing shift exponent -1 to be negative.\n\nThis patch fixes the issue by exiting the loop directly when negative\nshift is found.",
"id": "GHSA-8f4h-jjh9-fxrx",
"modified": "2025-11-04T00:31:19Z",
"published": "2024-08-26T12:31:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-44938"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/234e6ea0855cdb5673d54ecaf7dc5c78f3e84630"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4de2c04c3acd5b84f50b0d2f8f09e9b2f42374b9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7063b80268e2593e58bee8a8d709c2f3ff93e2f2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bb7c605a754823b86dd74f6537ccb9d38a9dec5a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bd04a149e3a29e7f71b7956ed41dba34e42d539e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f650148b43949ca9e37e820804bb6026fff404f3"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
}
],
"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"
}
]
}
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