{"timestamp":"2024-05-22T15:53:56.304705Z","id":"CVE-2021-47457","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/can/isotp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"e057dd3fc20ffb3d7f150af46542a51b59b90127","lessThan":"053bc12df0d6097c1126d0e14fa778a0a8faeb64","versionType":"git","status":"affected"},{"version":"e057dd3fc20ffb3d7f150af46542a51b59b90127","lessThan":"a76abedd2be3926d6deba236a935c7f98abf9110","versionType":"git","status":"affected"},{"version":"e057dd3fc20ffb3d7f150af46542a51b59b90127","lessThan":"9acf636215a6ce9362fe618e7da4913b8bfe84c8","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/can/isotp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.10","status":"affected"},{"version":"0","lessThan":"5.10","versionType":"semver","status":"unaffected"},{"version":"5.10.76","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.14.15","lessThanOrEqual":"5.14.*","versionType":"semver","status":"unaffected"},{"version":"5.15","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD-CWE-noinfo

OR
          *cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc5:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc4:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:5.15:rc6:*:*:*:*:*:*
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10 up to (excluding) 5.10.76
          *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.14.15

CVE: https://git.kernel.org/stable/c/053bc12df0d6097c1126d0e14fa778a0a8faeb64 Types: Patch

CVE: https://git.kernel.org/stable/c/9acf636215a6ce9362fe618e7da4913b8bfe84c8 Types: Patch

CVE: https://git.kernel.org/stable/c/a76abedd2be3926d6deba236a935c7f98abf9110 Types: Patch

kernel.org: https://git.kernel.org/stable/c/053bc12df0d6097c1126d0e14fa778a0a8faeb64 Types: Patch

kernel.org: https://git.kernel.org/stable/c/9acf636215a6ce9362fe618e7da4913b8bfe84c8 Types: Patch

kernel.org: https://git.kernel.org/stable/c/a76abedd2be3926d6deba236a935c7f98abf9110 Types: Patch

https://git.kernel.org/stable/c/053bc12df0d6097c1126d0e14fa778a0a8faeb64

https://git.kernel.org/stable/c/9acf636215a6ce9362fe618e7da4913b8bfe84c8

https://git.kernel.org/stable/c/a76abedd2be3926d6deba236a935c7f98abf9110

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

can: isotp: isotp_sendmsg(): add result check for wait_event_interruptible()

Using wait_event_interruptible() to wait for complete transmission,
but do not check the result of wait_event_interruptible() which can be
interrupted. It will result in TX buffer has multiple accessors and
the later process interferes with the previous process.

Following is one of the problems reported by syzbot.

=============================================================
WARNING: CPU: 0 PID: 0 at net/can/isotp.c:840 isotp_tx_timer_handler+0x2e0/0x4c0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.13.0-rc7+ #68
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014
RIP: 0010:isotp_tx_timer_handler+0x2e0/0x4c0
Call Trace:
 <IRQ>
 ? isotp_setsockopt+0x390/0x390
 __hrtimer_run_queues+0xb8/0x610
 hrtimer_run_softirq+0x91/0xd0
 ? rcu_read_lock_sched_held+0x4d/0x80
 __do_softirq+0xe8/0x553
 irq_exit_rcu+0xf8/0x100
 sysvec_apic_timer_interrupt+0x9e/0xc0
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20

Add result check for wait_event_interruptible() in isotp_sendmsg()
to avoid multiple accessers for tx buffer.

kernel.org https://git.kernel.org/stable/c/053bc12df0d6097c1126d0e14fa778a0a8faeb64 [No types assigned]

kernel.org https://git.kernel.org/stable/c/9acf636215a6ce9362fe618e7da4913b8bfe84c8 [No types assigned]

kernel.org https://git.kernel.org/stable/c/a76abedd2be3926d6deba236a935c7f98abf9110 [No types assigned]