CVE-2024-44938

jfs: Fix shift-out-of-bounds in dbDiscardAG

MEDIUM

5.5

CVSS Score

Published: August 26, 2024 at 11:20 AM UTC

Updated: June 17, 2026 at 07:53 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

In 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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

v < 6.6.473.7 ≤ v < 5.10.2373.7 ≤ v < 5.15.1813.7 ≤ v < 6.1.1073.7 ≤ v < 6.10.63.7 ≤ v < 6.113.7 ≤ v < 6.6.476.7 ≤ v < 6.10.63.7b40c2e665cd552eae5fbdbb878bc29a34357668e

Vendor states this is fixed in 234e6ea0855cdb5673d54ecaf7dc5c78f3e84630 (fixed)

Vendor states this is fixed in 4de2c04c3acd5b84f50b0d2f8f09e9b2f42374b9 (fixed)

Vendor states this is fixed in 7063b80268e2593e58bee8a8d709c2f3ff93e2f2 (fixed)

Vendor states this is fixed in bb7c605a754823b86dd74f6537ccb9d38a9dec5a (fixed)

Vendor states this is fixed in bd04a149e3a29e7f71b7956ed41dba34e42d539e (fixed)

Vendor states this is fixed in f650148b43949ca9e37e820804bb6026fff404f3 (fixed)

Vendor states this is fixed in 3.7 (unaffected)

Vendor states this is fixed in 5.10.237 (unaffected)

Vendor states this is fixed in 5.15.181 (unaffected)

Vendor states this is fixed in 6.1.107 (unaffected)

Vendor states this is fixed in 6.10.6 (unaffected)

Vendor states this is fixed in 6.11 (unaffected)