CVE-2025-37876

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-37876
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-37876.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-37876
Related
Published
2025-05-09T07:16:08Z
Modified
2025-05-13T10:44:06.016769Z
Summary
[none]
Details

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

netfs: Only create /proc/fs/netfs with CONFIGPROCFS

When testing a special config:

CONFIGNETFSSUPPORTS=y CONFIGPROCFS=n

The system crashes with something like:

[ 3.766197] ------------[ cut here ]------------ [ 3.766484] kernel BUG at mm/mempool.c:560! [ 3.766789] Oops: invalid opcode: 0000 [#1] SMP NOPTI [ 3.767123] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G W [ 3.767777] Tainted: [W]=WARN [ 3.767968] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), [ 3.768523] RIP: 0010:mempoolallocslab.cold+0x17/0x19 [ 3.768847] Code: 50 fe ff 58 5b 5d 41 5c 41 5d 41 5e 41 5f e9 93 95 13 00 [ 3.769977] RSP: 0018:ffffc90000013998 EFLAGS: 00010286 [ 3.770315] RAX: 000000000000002f RBX: ffff888100ba8640 RCX: 0000000000000000 [ 3.770749] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 00000000ffffffff [ 3.771217] RBP: 0000000000092880 R08: 0000000000000000 R09: ffffc90000013828 [ 3.771664] R10: 0000000000000001 R11: 00000000ffffffea R12: 0000000000092cc0 [ 3.772117] R13: 0000000000000400 R14: ffff8881004b1620 R15: ffffea0004ef7e40 [ 3.772554] FS: 0000000000000000(0000) GS:ffff8881b5f3c000(0000) knlGS:0000000000000000 [ 3.773061] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.773443] CR2: ffffffff830901b4 CR3: 0000000004296001 CR4: 0000000000770ef0 [ 3.773884] PKRU: 55555554 [ 3.774058] Call Trace: [ 3.774232] <TASK> [ 3.774371] mempoolallocnoprof+0x6a/0x190 [ 3.774649] ? printk+0x57/0x80 [ 3.774862] netfsallocrequest+0x85/0x2ce [ 3.775147] netfsreadahead+0x28/0x170 [ 3.775395] readpages+0x6c/0x350 [ 3.775623] ? srsoaliasreturnthunk+0x5/0xfbef5 [ 3.775928] pagecacheraunbounded+0x1bd/0x2a0 [ 3.776247] filemapgetpages+0x139/0x970 [ 3.776510] ? srsoaliasreturnthunk+0x5/0xfbef5 [ 3.776820] filemapread+0xf9/0x580 [ 3.777054] ? srsoaliasreturnthunk+0x5/0xfbef5 [ 3.777368] ? srsoaliasreturnthunk+0x5/0xfbef5 [ 3.777674] ? findheldlock+0x32/0x90 [ 3.777929] ? netfsstartioread+0x19/0x70 [ 3.778221] ? netfsstartioread+0x19/0x70 [ 3.778489] ? srsoaliasreturnthunk+0x5/0xfbef5 [ 3.778800] ? lockacquired+0x1e6/0x450 [ 3.779054] ? srsoaliasreturnthunk+0x5/0xfbef5 [ 3.779379] netfsbufferedreaditer+0x57/0x80 [ 3.779670] _kernelread+0x158/0x2c0 [ 3.779927] bprmexecve+0x300/0x7a0 [ 3.780185] kernelexecve+0x10c/0x140 [ 3.780423] ? _pfxkernelinit+0x10/0x10 [ 3.780690] kernelinit+0xd5/0x150 [ 3.780910] retfromfork+0x2d/0x50 [ 3.781156] ? _pfxkernelinit+0x10/0x10 [ 3.781414] retfromfork_asm+0x1a/0x30 [ 3.781677] </TASK> [ 3.781823] Modules linked in: [ 3.782065] ---[ end trace 0000000000000000 ]---

This is caused by the following error path in netfs_init():

    if (!proc_mkdir("fs/netfs", NULL))
            goto error_proc;

Fix this by adding ifdef in netfsmain(), so that /proc/fs/netfs is only created with CONFIGPROC_FS.

References

Affected packages

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.12.27-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1
6.1.82-1
6.1.85-1
6.1.90-1~bpo11+1
6.1.90-1
6.1.94-1~bpo11+1
6.1.94-1
6.1.98-1
6.1.99-1
6.1.106-1
6.1.106-2
6.1.106-3
6.1.112-1
6.1.115-1
6.1.119-1
6.1.123-1
6.1.124-1
6.1.128-1
6.1.129-1
6.1.133-1
6.1.135-1
6.1.137-1
6.3.1-1~exp1
6.3.2-1~exp1
6.3.4-1~exp1
6.3.5-1~exp1
6.3.7-1~bpo12+1
6.3.7-1
6.3.11-1
6.4~rc6-1~exp1
6.4~rc7-1~exp1
6.4.1-1~exp1
6.4.4-1~bpo12+1
6.4.4-1
6.4.4-2
6.4.4-3~bpo12+1
6.4.4-3
6.4.11-1
6.4.13-1
6.5~rc4-1~exp1
6.5~rc6-1~exp1
6.5~rc7-1~exp1
6.5.1-1~exp1
6.5.3-1~bpo12+1
6.5.3-1
6.5.6-1
6.5.8-1
6.5.10-1~bpo12+1
6.5.10-1
6.5.13-1
6.6.3-1~exp1
6.6.4-1~exp1
6.6.7-1~exp1
6.6.8-1
6.6.9-1
6.6.11-1
6.6.13-1~bpo12+1
6.6.13-1
6.6.15-1
6.6.15-2
6.7-1~exp1
6.7.1-1~exp1
6.7.4-1~exp1
6.7.7-1
6.7.9-1
6.7.9-2
6.7.12-1~bpo12+1
6.7.12-1
6.8.9-1
6.8.11-1
6.8.12-1~bpo12+1
6.8.12-1
6.9.2-1~exp1
6.9.7-1~bpo12+1
6.9.7-1
6.9.8-1
6.9.9-1
6.9.10-1~bpo12+1
6.9.10-1
6.9.11-1
6.9.12-1
6.10-1~exp1
6.10.1-1~exp1
6.10.3-1
6.10.4-1
6.10.6-1~bpo12+1
6.10.6-1
6.10.7-1
6.10.9-1
6.10.11-1~bpo12+1
6.10.11-1
6.10.12-1
6.11~rc4-1~exp1
6.11~rc5-1~exp1
6.11-1~exp1
6.11.2-1
6.11.4-1
6.11.5-1~bpo12+1
6.11.5-1
6.11.6-1
6.11.7-1
6.11.9-1
6.11.10-1~bpo12+1
6.11.10-1
6.12~rc6-1~exp1
6.12.3-1
6.12.5-1
6.12.6-1
6.12.8-1
6.12.9-1~bpo12+1
6.12.9-1
6.12.9-1+alpha
6.12.10-1
6.12.11-1
6.12.11-1+alpha
6.12.11-1+alpha.1
6.12.12-1~bpo12+1
6.12.12-1
6.12.13-1
6.12.15-1
6.12.16-1
6.12.17-1
6.12.19-1
6.12.20-1
6.12.21-1
6.12.22-1~bpo12+1
6.12.22-1
6.12.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}