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CVE-2024-58095: jfs: add check read-only before txBeginAnon() call

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-16 · updated 2026-09-02

Description

In the Linux kernel, the following vulnerability has been resolved: jfs: add check read-only before txBeginAnon() call Added a read-only check before calling `txBeginAnon` in `extAlloc` and `extRecord`. This prevents modification attempts on a read-only mounted filesystem, avoiding potential errors or crashes. Call trace: txBeginAnon+0xac/0x154 extAlloc+0xe8/0xdec fs/jfs/jfs_extent.c:78 jfs_get_block+0x340/0xb98 fs/jfs/inode.c:248 __block_write_begin_int+0x580/0x166c fs/buffer.c:2128 __block_write_begin fs/buffer.c:2177 [inline] block_write_begin+0x98/0x11c fs/buffer.c:2236 jfs_write_begin+0x44/0x88 fs/jfs/inode.c:299

Affected products

• Linux kernel: from 2.6.13 before 6.14.2; 2.6.12, 2.6.12-rc2, 2.6.12-rc3, 2.6.12-rc4, 2.6.12-rc5 — fixed in 6.14.2

How to fix

Upgrade to a fixed version: Linux kernel 6.14.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0176e69743ecc02961f2ae1ea42439cd2bf9ed58
• https://git.kernel.org/stable/c/15469c408af2d7a52fb186a92f2f091b0f13b1fb
• https://git.kernel.org/stable/c/469bd67fc338e77d7585e4f20d4212afd44fefdc
• https://git.kernel.org/stable/c/47a99881ecc50ff2bf4e7a6c3058fe1704073df9
• https://git.kernel.org/stable/c/939dba7a6404d4ac88e2539cb21ac659f5757fd9
• https://git.kernel.org/stable/c/93f11ab37f1c657f4265228ba3c2ff66bbefa24d
• https://git.kernel.org/stable/c/97ac32b08442f5327867ad7d70d6ac6ebaa2a41a

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