CVE-2025-22002: netfs: Call `invalidate_cache` only if implemented
First published: Thu Apr 03 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: netfs: Call `invalidate_cache` only if implemented Many filesystems such as NFS and Ceph do not implement the `invalidate_cache` method. On those filesystems, if writing to the cache (`NETFS_WRITE_TO_CACHE`) fails for some reason, the kernel crashes like this: BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 0 P4D 0 Oops: Oops: 0010 [#1] SMP PTI CPU: 9 UID: 0 PID: 3380 Comm: kworker/u193:11 Not tainted 6.13.3-cm4all1-hp #437 Hardware name: HP ProLiant DL380 Gen9/ProLiant DL380 Gen9, BIOS P89 10/17/2018 Workqueue: events_unbound netfs_write_collection_worker RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffff9b86e2ca7dc0 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 7fffffffffffffff RDX: 0000000000000001 RSI: ffff89259d576a18 RDI: ffff89259d576900 RBP: ffff89259d5769b0 R08: ffff9b86e2ca7d28 R09: 0000000000000002 R10: ffff89258ceaca80 R11: 0000000000000001 R12: 0000000000000020 R13: ffff893d158b9338 R14: ffff89259d576900 R15: ffff89259d5769b0 FS: 0000000000000000(0000) GS:ffff893c9fa40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000054442e003 CR4: 00000000001706f0 Call Trace: <TASK> ? __die+0x1f/0x60 ? page_fault_oops+0x15c/0x460 ? try_to_wake_up+0x2d2/0x530 ? exc_page_fault+0x5e/0x100 ? asm_exc_page_fault+0x22/0x30 netfs_write_collection_worker+0xe9f/0x12b0 ? xs_poll_check_readable+0x3f/0x80 ? xs_stream_data_receive_workfn+0x8d/0x110 process_one_work+0x134/0x2d0 worker_thread+0x299/0x3a0 ? __pfx_worker_thread+0x10/0x10 kthread+0xba/0xe0 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x30/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK> Modules linked in: CR2: 0000000000000000 This patch adds the missing `NULL` check.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=6.8<6.12.21 | |
| Linux Kernel | >=6.13<6.13.9 | |
| Linux Kernel | =6.14-rc1 | |
| Linux Kernel | =6.14-rc2 | |
| Linux Kernel | =6.14-rc3 | |
| Linux Kernel | =6.14-rc4 | |
| Linux Kernel | =6.14-rc5 | |
| Linux Kernel | =6.14-rc6 | |
| Linux Kernel | =6.14-rc7 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-22002?
CVE-2025-22002 is classified as a moderate severity vulnerability due to its specific impact on certain filesystems.
How do I fix CVE-2025-22002?
To fix CVE-2025-22002, ensure that your Linux kernel is updated to the latest version where this vulnerability has been addressed.
Which versions of the Linux kernel are affected by CVE-2025-22002?
CVE-2025-22002 affects Linux kernel versions that do not implement the `invalidate_cache` method for filesystems such as NFS and Ceph.
What components are impacted by CVE-2025-22002?
CVE-2025-22002 specifically impacts the netfs subsystem within the Linux kernel, affecting its interaction with certain filesystems.
Is my data at risk due to CVE-2025-22002?
Yes, data integrity may be at risk if cached writes fail on unsupported filesystems, making it important to address this vulnerability promptly.
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/type
- agent/references
- agent/description
- agent/title
- agent/first-publish-date
- agent/guess-ai
- agent/software-canonical-lookup
- agent/author
- agent/source
- agent/tags
- agent/remedy
- agent/severity
- agent/last-modified-date
- agent/softwarecombine
- agent/event
- collector/nvd-api
- source/NVD
- vendor/linux
- canonical/linux kernel
- version/linux kernel/6.8
- version/linux kernel/6.13
- version/linux kernel/6.14-rc1
- version/linux kernel/6.14-rc2
- version/linux kernel/6.14-rc3
- version/linux kernel/6.14-rc4
- version/linux kernel/6.14-rc5
- version/linux kernel/6.14-rc6
- version/linux kernel/6.14-rc7