CVE-2025-38652

Summary

In the Linux kernel, the following vulnerability has been resolved:

f2fs: fix to avoid out-of-boundary access in devs.path

  • touch /mnt/f2fs/012345678901234567890123456789012345678901234567890123
  • truncate -s $((102410241024))
    /mnt/f2fs/012345678901234567890123456789012345678901234567890123
  • touch /mnt/f2fs/file
  • truncate -s $((102410241024)) /mnt/f2fs/file
  • mkfs.f2fs /mnt/f2fs/012345678901234567890123456789012345678901234567890123
    -c /mnt/f2fs/file
  • mount /mnt/f2fs/012345678901234567890123456789012345678901234567890123
    /mnt/f2fs/loop

[16937.192225] F2FS-fs (loop0): Mount Device [ 0]: /mnt/f2fs/012345678901234567890123456789012345678901234567890123\xff\x01, 511, 0 - 3ffff [16937.192268] F2FS-fs (loop0): Failed to find devices

If device path length equals to MAX_PATH_LEN, sbi->devs.path[] may not end up w/ null character due to path array is fully filled, So accidently, fields locate after path[] may be treated as part of device path, result in parsing wrong device path.

struct f2fs_dev_info { … char path[MAX_PATH_LEN]; … };

Let's add one byte space for sbi->devs.path[] to store null character of device path string.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3c62be17d4f562f43fe1d03b48194399caa35aa5 < dc0172c74bd9edaee7bea2ebb35f3dbd37a8ae80affected
LinuxLinux3c62be17d4f562f43fe1d03b48194399caa35aa5 < 1cf1ff15f262e8baf12201b270b6a79f9d119b2daffected
LinuxLinux3c62be17d4f562f43fe1d03b48194399caa35aa5 < 666b7cf6ac9aa074b8319a2b68cba7f2c30023f0affected
LinuxLinux3c62be17d4f562f43fe1d03b48194399caa35aa5 < 3466721f06edff834f99d9f49f23eabc6b2cb78eaffected
LinuxLinux3c62be17d4f562f43fe1d03b48194399caa35aa5 < 345fc8d1838f3f8be7c8ed08d86a13dedef67136affected
LinuxLinux3c62be17d4f562f43fe1d03b48194399caa35aa5 < 70849d33130a2cf1d6010069ed200669c8651fbdaffected
LinuxLinux3c62be17d4f562f43fe1d03b48194399caa35aa5 < 755427093e4294ac111c3f9e40d53f681a0fbdaaaffected
LinuxLinux3c62be17d4f562f43fe1d03b48194399caa35aa5 < 1b1efa5f0e878745e94a98022e8edc675a87d78eaffected
LinuxLinux3c62be17d4f562f43fe1d03b48194399caa35aa5 < 5661998536af52848cc4d52a377e90368196edeaaffected
LinuxLinux4.10affected
LinuxLinux0 < 4.10unaffected
LinuxLinux5.4.297 <= 5.4.*unaffected
LinuxLinux5.10.241 <= 5.10.*unaffected
LinuxLinux5.15.190 <= 5.15.*unaffected
LinuxLinux6.1.148 <= 6.1.*unaffected
LinuxLinux6.6.102 <= 6.6.*unaffected
LinuxLinux6.12.42 <= 6.12.*unaffected
LinuxLinux6.15.10 <= 6.15.*unaffected
LinuxLinux6.16.1 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

References