CVE-2026-74426

Not scored yetLast modified Aug 17, 2026

Description

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

afs: fix NULL pointer dereference in afs_get_tree()

afs_alloc_sbi() uses kzalloc for memory allocation. And, if ctx->dyn_root is not null, as->cell and as->volume are null. In trace_afs_get_tree() they are dereferenced.

KASAN error message:

KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 2 PID: 18478 Comm: syz-executor.7 Not tainted 5.10.246-syzkaller #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:perf_trace_afs_get_tree+0x1d9/0x550 include/trace/events/afs.h:1365

Call Trace: trace_afs_get_tree include/trace/events/afs.h:1365 [inline] afs_get_tree+0x922/0x1350 fs/afs/super.c:599 vfs_get_tree+0x8e/0x300 fs/super.c:1572 do_new_mount fs/namespace.c:3011 [inline] path_mount+0x14a5/0x2220 fs/namespace.c:3341 do_mount fs/namespace.c:3354 [inline] __do_sys_mount fs/namespace.c:3562 [inline] __se_sys_mount fs/namespace.c:3539 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3539 do_syscall_64+0x33/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

Metrics

No CVSS score has been published yet.

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 80548b03991f58758a336424a90bf9f988e3b077, < 67fb48c4a0874953212321cd5d57fdb4900dbc31; >= 80548b03991f58758a336424a90bf9f988e3b077, < d648cc2069eb081707c061849046d909f57c78b1; >= 80548b03991f58758a336424a90bf9f988e3b077, < d5b17474feed3c30991f07affa2473adbad95055; >= 80548b03991f58758a336424a90bf9f988e3b077, < 867b3ea146a041023bfcd258e6db516b1bb28f19; >= 80548b03991f58758a336424a90bf9f988e3b077, < ea19edf71721cd42f923e3c70f4ff995b422fe3b; >= 80548b03991f58758a336424a90bf9f988e3b077, < 23b3d457d8387bcb2a61063a9e520063ada9335f; >= 80548b03991f58758a336424a90bf9f988e3b077, < 70b2842734d831c908474779bb8a76daf55f782c; >= 80548b03991f58758a336424a90bf9f988e3b077, < 0b70716081c6462be9b2928ad736d0d527b09678
LinuxLinux5.2

References

Timeline

Published
Aug 15, 2026
Last modified
Aug 17, 2026
NVD status
Received

Related CVEs from 2026

CVE-2026-744279.8In the Linux kernel, the following vulnerability has been resolved: afs: Fix netns teardown to cancel the preallocation charger Fix the teCVE-2026-744289.8In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix double unlock in rxrpc_recvmsg() Fix a double unlock in rxrCVE-2026-744297.5In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix the reception of a reply packet before data transmission FiCVE-2026-74437.3A weakness has been identified in BurtTheCoder mcp-dnstwist up to 1.0.4. Affected by this vulnerability is the function fuzz_domain of the fCVE-2026-744307.5In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix ACKALL packet handling rxrpc_input_ackall() accepts ACKALL CVE-2026-744317.5In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix potential infinite loop in rxrpc_recvmsg() Fix the wait in CVE-2026-74432In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix leak of released call in recvmsg(MSG_PEEK) Fix rxrpc_recvmsCVE-2026-744339.8In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix UAF in rxgk_issue_challenge() Fix rxgk_issue_challenge() toCVE-2026-744349.8In the Linux kernel, the following vulnerability has been resolved: rxrpc: Don't move a peeked OOB message onto the pending queue rxrpc_reCVE-2026-744357.5In the Linux kernel, the following vulnerability has been resolved: rxrpc: rxrpc_verify_data ensure rx_dec_buffer alloc rxrpc_recvmsg_dataCVE-2026-744369.8In the Linux kernel, the following vulnerability has been resolved: rxrpc: serialize kernel accept preallocation with socket teardown rxrpCVE-2026-74437In the Linux kernel, the following vulnerability has been resolved: media: uvcvideo: Fix deadlock if uvc_status_stop is called from async_c
CVE-2026-74426: Unscored | Vulnix