CVE-2026-23265
published 2026-03-18CVE-2026-23265: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node footer in {read,write}_end_io -----------[ cut here…
PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.11%
1.6th percentile
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on node footer in {read,write}_end_io
-----------[ cut here ]------------
kernel BUG at fs/f2fs/data.c:358!
Call Trace:
blk_update_request+0x5eb/0xe70 block/blk-mq.c:987
blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1149
blk_complete_reqs block/blk-mq.c:1224 [inline]
blk_done_softirq+0x107/0x160 block/blk-mq.c:1229
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
In f2fs_write_end_io(), it detects there is inconsistency in between
node page index (nid) and footer.nid of node page.
If footer of node page is corrupted in fuzzed image, then we load corrupted
node page w/ async method, e.g. f2fs_ra_node_pages() or f2fs_ra_node_page(),
in where we won't do sanity check on node footer, once node page becomes
dirty, we will encounter this bug after node page writeback.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.18.13-1 (forky) | linux 6.18.13-1 (forky) |
| linux | linux | — | — |
| linux | linux | >= e05df3b115e7308afbca652769b54e4549fcc723 < 855c54f1803e3ebc613677b4f389c7f92656a1fc | 855c54f1803e3ebc613677b4f389c7f92656a1fc |
| linux | linux | >= e05df3b115e7308afbca652769b54e4549fcc723 < c386753db52b3a80afa6612bfdcb925aa5ca260f | c386753db52b3a80afa6612bfdcb925aa5ca260f |
| linux | linux | >= e05df3b115e7308afbca652769b54e4549fcc723 < 50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4 | 50ac3ecd8e05b6bcc350c71a4307d40c030ec7e4 |
| linux | linux_kernel | >= 0 < 6.18.13-1 | 6.18.13-1 |
| linux | linux_kernel | >= 3.8 < 6.18.13 | 6.18.13 |
| linux | linux_kernel | >= 3.8.0 < 6.18.13 | 6.18.13 |
| linux | linux_kernel | >= 6.19 < 6.19.3 | 6.19.3 |
| linux | linux_kernel | >= 6.19.0 < 6.19.3 | 6.19.3 |
| msrc | azl3_kernel_6.6.126.1-1_on_azure_linux_3.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vendor_msrc7.1HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
Linux Kernel up to 6.18.12/6.19.2 fs/f2fs/data.c f2fs_write_end_io privilege escalation (EUVD-2026-12904 / WID-SEC-2026-0790)
vuldb·2026-06-01·CVSS 5.5
CVE-2026-23265 [MEDIUM] Linux Kernel up to 6.18.12/6.19.2 fs/f2fs/data.c f2fs_write_end_io privilege escalation (EUVD-2026-12904 / WID-SEC-2026-0790)
A vulnerability marked as problematic has been reported in Linux Kernel up to 6.18.12/6.19.2. This affects the function f2fs_write_end_io of the file fs/f2fs/data.c. Performing a manipulation results in privilege escalation.
This vulnerability is cataloged as CVE-2026-23265. The attack must originate from the local network. There is no exploit available.
It is suggested to upgrade the affected component.
OSV
f2fs: fix to do sanity check on node footer in {read,write}_end_io
osv·2026-03-18
CVE-2026-23265 f2fs: fix to do sanity check on node footer in {read,write}_end_io
f2fs: fix to do sanity check on node footer in {read,write}_end_io
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on node footer in {read,write}_end_io
-----------[ cut here ]------------
kernel BUG at fs/f2fs/data.c:358!
Call Trace:
blk_update_request+0x5eb/0xe70 block/blk-mq.c:987
blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1149
blk_complete_reqs block/blk-mq.c:1224 [inline]
blk_done_softirq+0x107/0x160 block/blk-mq.c:1229
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_ti
GHSA
GHSA-h5gx-jh73-27w4: In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on node footer in {read,write}_end_io
-----------[
ghsa_unreviewed·2026-03-18
CVE-2026-23265 GHSA-h5gx-jh73-27w4: In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on node footer in {read,write}_end_io
-----------[
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on node footer in {read,write}_end_io
-----------[ cut here ]------------
kernel BUG at fs/f2fs/data.c:358!
Call Trace:
blk_update_request+0x5eb/0xe70 block/blk-mq.c:987
blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1149
blk_complete_reqs block/blk-mq.c:1224 [inline]
blk_done_softirq+0x107/0x160 block/blk-mq.c:1229
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
In f2fs_w
OSV
CVE-2026-23265: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node footer in {read,write}_end_io -----------[ cu
osv·2026-03-18
CVE-2026-23265 CVE-2026-23265: In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node footer in {read,write}_end_io -----------[ cu
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node footer in {read,write}_end_io -----------[ cut here ]------------ kernel BUG at fs/f2fs/data.c:358! Call Trace: blk_update_request+0x5eb/0xe70 block/blk-mq.c:987 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1149 blk_complete_reqs block/blk-mq.c:1224 [inline] blk_done_softirq+0x107/0x160 block/blk-mq.c:1229 handle_softirqs+0x283/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 In f2fs_write_
Red Hat
kernel: f2fs: fix to do sanity check on node footer in {read,write}_end_io
vendor_redhat·2026-03-18
CVE-2026-23265 kernel: f2fs: fix to do sanity check on node footer in {read,write}_end_io
kernel: f2fs: fix to do sanity check on node footer in {read,write}_end_io
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to do sanity check on node footer in {read,write}_end_io
-----------[ cut here ]------------
kernel BUG at fs/f2fs/data.c:358!
Call Trace:
blk_update_request+0x5eb/0xe70 block/blk-mq.c:987
blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1149
blk_complete_reqs block/blk-mq.c:1224 [inline]
blk_done_softirq+0x107/0x160 block/blk-mq.c:1229
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_a
Microsoft
f2fs: fix to do sanity check on node footer in {read,write}_end_io
vendor_msrc·2026-03-10·CVSS 7.1
CVE-2026-23265 [HIGH] f2fs: fix to do sanity check on node footer in {read,write}_end_io
f2fs: fix to do sanity check on node footer in {read,write}_end_io
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Debian
CVE-2026-23265: linux - In the Linux kernel, the following vulnerability has been resolved: f2fs: fix t...
vendor_debian·2026
CVE-2026-23265 CVE-2026-23265: linux - In the Linux kernel, the following vulnerability has been resolved: f2fs: fix t...
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on node footer in {read,write}_end_io -----------[ cut here ]------------ kernel BUG at fs/f2fs/data.c:358! Call Trace: blk_update_request+0x5eb/0xe70 block/blk-mq.c:987 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1149 blk_complete_reqs block/blk-mq.c:1224 [inline] blk_done_softirq+0x107/0x160 block/blk-mq.c:1229 handle_softirqs+0x283/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 In f2fs_write_
No detection rules found.
No public exploits indexed.
2026-03-18
Published