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CVE-2024-49900

jfs: Fix uninit-value access of new_ea in ea_buffer

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113, and 3 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

In the Linux kernel, the following vulnerability has been resolved: jfs: Fix uninit-value access of new_ea in ea_buffer syzbot reports that lzo1x_1_do_compress is using uninit-value: ===================================================== BUG: KMSAN: uninit-value in lzo1x_1_do_compress+0x19f9/0x2510 lib/lzo/lzo1x_compress.c:178 ... Uninit was stored to memory at: ea_put fs/jfs/xattr.c:639 [inline] ... Local variable ea_buf created at: __jfs_setxattr+0x5d/0x1ae0 fs/jfs/xattr.c:662 __jfs_xattr_set+0xe6/0x1f0 fs/jfs/xattr.c:934 ===================================================== The reason is ea_buf->new_ea is not initialized properly. Fix this by using memset to empty its content at the beginning in ea_get().

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 7b24d41d47a6805c45378debf8bd115675d41da8; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in dac398ed272a378d2f42ac68ae408333a51baf52; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 8b1dcf25c26d42e4a68c4725ce52a0543c7878cc; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in d7444f91a9f93eaa48827087ed0f3381c194181d; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 6041536d18c5f51a84bc37cd568cbab61870031e; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in c076b3746224982eebdba5c9e4b1467e146c0d64; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 7c244d5b48284a770d96ff703df2dfeadf804a73; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 8ad8b531de79c348bcb8133e7f5e827b884226af; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 2b59ffad47db1c46af25ccad157bb3b25147c35c

  • Linux Linux

    2.6.12

  • KernelLinux

    From 2.6.12 · fixed in 4.19.323; From 4.20.0 · fixed in 5.4.285; From 5.5.0 · fixed in 5.10.227; From 5.11.0 · fixed in 5.15.168; From 5.16.0 · fixed in 6.1.113; From 6.2.0 · fixed in 6.6.55; From 6.7.0 · fixed in 6.10.14; From 6.11.0 · fixed in 6.11.3

References 9

git.kernel.org