CVE-2025-68295
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix memory leak in cifs_construct_tcon()
When having a multiuser mount with domain= specified and using cifscreds, cifs_set_cifscreds() will end up setting @ctx->domainname, so it needs to be freed before leaving cifs_construct_tcon().
This fixes the following memory leak reported by kmemleak:
mount.cifs //srv/share /mnt -o domain=ZELDA,multiuser,… su - testuser cifscreds add -d ZELDA -u testuser … ls /mnt/1 … umount /mnt echo scan > /sys/kernel/debug/kmemleak cat /sys/kernel/debug/kmemleak unreferenced object 0xffff8881203c3f08 (size 8): comm "ls", pid 5060, jiffies 4307222943 hex dump (first 8 bytes): 5a 45 4c 44 41 00 cc cc ZELDA… backtrace (crc d109a8cf): __kmalloc_node_track_caller_noprof+0x572/0x710 kstrdup+0x3a/0x70 cifs_sb_tlink+0x1209/0x1770 [cifs] cifs_get_fattr+0xe1/0xf50 [cifs] cifs_get_inode_info+0xb5/0x240 [cifs] cifs_revalidate_dentry_attr+0x2d1/0x470 [cifs] cifs_getattr+0x28e/0x450 [cifs] vfs_getattr_nosec+0x126/0x180 vfs_statx+0xf6/0x220 do_statx+0xab/0x110 __x64_sys_statx+0xd5/0x130 do_syscall_64+0xbb/0x380 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | f2aee329a68f5a907bcff11a109dfe17c0b41aeb < ff8f9bd1c46ee02d5558293915d42e82646d5ee9 | affected |
| Linux | Linux | f2aee329a68f5a907bcff11a109dfe17c0b41aeb < d146e96fef876492979658dce644305de35878d4 | affected |
| Linux | Linux | f2aee329a68f5a907bcff11a109dfe17c0b41aeb < 3dd546e867e94c2f954bca45a961b6104ba708b6 | affected |
| Linux | Linux | f2aee329a68f5a907bcff11a109dfe17c0b41aeb < f62ffdfb431bdfa4b6d24233b7fd830eca0b801e | affected |
| Linux | Linux | f2aee329a68f5a907bcff11a109dfe17c0b41aeb < f15288c137d960836277d0e3ecc62de68e52f00f | affected |
| Linux | Linux | f2aee329a68f5a907bcff11a109dfe17c0b41aeb < a67e91d5f446e455dd9201cdd6e865f7078d251d | affected |
| Linux | Linux | f2aee329a68f5a907bcff11a109dfe17c0b41aeb < 3184b6a5a24ec9ee74087b2a550476f386df7dc2 | affected |
| Linux | Linux | 1456d3cea31114137fabf1110d20a2e2c6d6060f | affected |
| Linux | Linux | 16764d7486d02b1699ae16e91d7a577602398b17 | affected |
| Linux | Linux | 904847402bd74a28164bd4d8da082d1eace7c190 | affected |
| Linux | Linux | 325fa2a6729b74b2806b31725940cb54658515e5 | affected |
| Linux | Linux | 8db988a982908b7bff76e095000adabf9c29698b | affected |
| Linux | Linux | 4.4.194 < 4.5 | affected |
| Linux | Linux | 4.9.194 < 4.10 | affected |
| Linux | Linux | 4.14.146 < 4.15 | affected |
| Linux | Linux | 4.19.75 < 4.20 | affected |
| Linux | Linux | 5.2.17 < 5.3 | affected |
| Linux | Linux | 5.3 | affected |
| Linux | Linux | 0 < 5.3 | unaffected |
| Linux | Linux | 5.10.247 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.197 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.159 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.119 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.61 <= 6.12.* | unaffected |
| Linux | Linux | 6.17.11 <= 6.17.* | unaffected |
| Linux | Linux | 6.18 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://git.kernel.org/stable/c/ff8f9bd1c46ee02d5558293915d42e82646d5ee9
- https://git.kernel.org/stable/c/d146e96fef876492979658dce644305de35878d4
- https://git.kernel.org/stable/c/3dd546e867e94c2f954bca45a961b6104ba708b6
- https://git.kernel.org/stable/c/f62ffdfb431bdfa4b6d24233b7fd830eca0b801e
- https://git.kernel.org/stable/c/f15288c137d960836277d0e3ecc62de68e52f00f
- https://git.kernel.org/stable/c/a67e91d5f446e455dd9201cdd6e865f7078d251d
- https://git.kernel.org/stable/c/3184b6a5a24ec9ee74087b2a550476f386df7dc2
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