CVE-2025-21718 (GCVE-0-2025-21718)

Vulnerability from cvelistv5 – Published: 2025-02-27 02:07 – Updated: 2025-11-03 19:36
VLAI?
Title
net: rose: fix timer races against user threads
Summary
In the Linux kernel, the following vulnerability has been resolved: net: rose: fix timer races against user threads Rose timers only acquire the socket spinlock, without checking if the socket is owned by one user thread. Add a check and rearm the timers if needed. BUG: KASAN: slab-use-after-free in rose_timer_expiry+0x31d/0x360 net/rose/rose_timer.c:174 Read of size 2 at addr ffff88802f09b82a by task swapper/0/0 CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.13.0-rc5-syzkaller-00172-gd1bf27c4e176 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 rose_timer_expiry+0x31d/0x360 net/rose/rose_timer.c:174 call_timer_fn+0x187/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 </IRQ>
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 52f5aff33ca73b2c2fa93f40a3de308012e63cf4 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0d5bca3be27bfcf8f980f2fed49b6cbb7dafe4a1 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1409b45d4690308c502c6caf22f01c3c205b4717 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f55c88e3ca5939a6a8a329024aed8f3d98eea8e4 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 51c128ba038cf1b79d605cbee325919b45ab95a5 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1992fb261c90e9827cf5dc3115d89bb0853252c9 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 58051a284ac18a3bb815aac6289a679903ddcc3f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5de7665e0a0746b5ad7943554b34db8f8614a196 (git)
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    Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.4.291 , ≤ 5.4.* (semver)
Unaffected: 5.10.235 , ≤ 5.10.* (semver)
Unaffected: 5.15.179 , ≤ 5.15.* (semver)
Unaffected: 6.1.129 , ≤ 6.1.* (semver)
Unaffected: 6.6.76 , ≤ 6.6.* (semver)
Unaffected: 6.12.13 , ≤ 6.12.* (semver)
Unaffected: 6.13.2 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: rose: fix timer races against user threads\n\nRose timers only acquire the socket spinlock, without\nchecking if the socket is owned by one user thread.\n\nAdd a check and rearm the timers if needed.\n\nBUG: KASAN: slab-use-after-free in rose_timer_expiry+0x31d/0x360 net/rose/rose_timer.c:174\nRead of size 2 at addr ffff88802f09b82a by task swapper/0/0\n\nCPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.13.0-rc5-syzkaller-00172-gd1bf27c4e176 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nCall Trace:\n \u003cIRQ\u003e\n  __dump_stack lib/dump_stack.c:94 [inline]\n  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120\n  print_address_description mm/kasan/report.c:378 [inline]\n  print_report+0x169/0x550 mm/kasan/report.c:489\n  kasan_report+0x143/0x180 mm/kasan/report.c:602\n  rose_timer_expiry+0x31d/0x360 net/rose/rose_timer.c:174\n  call_timer_fn+0x187/0x650 kernel/time/timer.c:1793\n  expire_timers kernel/time/timer.c:1844 [inline]\n  __run_timers kernel/time/timer.c:2418 [inline]\n  __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430\n  run_timer_base kernel/time/timer.c:2439 [inline]\n  run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449\n  handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561\n  __do_softirq kernel/softirq.c:595 [inline]\n  invoke_softirq kernel/softirq.c:435 [inline]\n  __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662\n  irq_exit_rcu+0x9/0x30 kernel/softirq.c:678\n  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]\n  sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049\n \u003c/IRQ\u003e"
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      "title": "net: rose: fix timer races against user threads",
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    "cveId": "CVE-2025-21718",
    "datePublished": "2025-02-27T02:07:27.971Z",
    "dateReserved": "2024-12-29T08:45:45.753Z",
    "dateUpdated": "2025-11-03T19:36:13.575Z",
    "state": "PUBLISHED"
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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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