Home

Description

In the Linux kernel, the following vulnerability has been resolved: erofs: fix wrong kunmap when using LZMA on HIGHMEM platforms As the call trace shown, the root cause is kunmap incorrect pages: BUG: kernel NULL pointer dereference, address: 00000000 CPU: 1 PID: 40 Comm: kworker/u5:0 Not tainted 6.2.0-rc5 #4 Workqueue: erofs_worker z_erofs_decompressqueue_work EIP: z_erofs_lzma_decompress+0x34b/0x8ac z_erofs_decompress+0x12/0x14 z_erofs_decompress_queue+0x7e7/0xb1c z_erofs_decompressqueue_work+0x32/0x60 process_one_work+0x24b/0x4d8 ? process_one_work+0x1a4/0x4d8 worker_thread+0x14c/0x3fc kthread+0xe6/0x10c ? rescuer_thread+0x358/0x358 ? kthread_complete_and_exit+0x18/0x18 ret_from_fork+0x1c/0x28 ---[ end trace 0000000000000000 ]--- The bug is trivial and should be fixed now. It has no impact on !HIGHMEM platforms.

PUBLISHED Reserved 2025-05-02 | Published 2025-05-02 | Updated 2026-05-11 | Assigner Linux

Product status

Default status
unaffected

622ceaddb7649ca328832f50ba1400af778d75fa (git) before fa4056781ac067b5946c6811459e1a36842047fd
affected

622ceaddb7649ca328832f50ba1400af778d75fa (git) before 28aea8ae6cf212a5bf3ed962b27921e2029ad754
affected

622ceaddb7649ca328832f50ba1400af778d75fa (git) before 8f121dfb15f7b4ab345992ce96003eb63fd608f4
affected

Default status
affected

5.16
affected

Any version before 5.16
unaffected

6.1.20 (semver)
unaffected

6.2.7 (semver)
unaffected

6.3 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/fa4056781ac067b5946c6811459e1a36842047fd

git.kernel.org/...c/28aea8ae6cf212a5bf3ed962b27921e2029ad754

git.kernel.org/...c/8f121dfb15f7b4ab345992ce96003eb63fd608f4

cve.org (CVE-2023-53144)

nvd.nist.gov (CVE-2023-53144)

Download JSON