{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53558","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-04T15:14:15.923Z","datePublished":"2025-10-04T15:17:02.822Z","dateUpdated":"2026-05-11T19:47:17.694Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:47:17.694Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nrcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()\n\npr_info() is called with rtp->cbs_gbl_lock spin lock locked.  Because\npr_info() calls printk() that might sleep, this will result in BUG\nlike below:\n\n[    0.206455] cblist_init_generic: Setting adjustable number of callback queues.\n[    0.206463]\n[    0.206464] =============================\n[    0.206464] [ BUG: Invalid wait context ]\n[    0.206465] 5.19.0-00428-g9de1f9c8ca51 #5 Not tainted\n[    0.206466] -----------------------------\n[    0.206466] swapper/0/1 is trying to lock:\n[    0.206467] ffffffffa0167a58 (&port_lock_key){....}-{3:3}, at: serial8250_console_write+0x327/0x4a0\n[    0.206473] other info that might help us debug this:\n[    0.206473] context-{5:5}\n[    0.206474] 3 locks held by swapper/0/1:\n[    0.206474]  #0: ffffffff9eb597e0 (rcu_tasks.cbs_gbl_lock){....}-{2:2}, at: cblist_init_generic.constprop.0+0x14/0x1f0\n[    0.206478]  #1: ffffffff9eb579c0 (console_lock){+.+.}-{0:0}, at: _printk+0x63/0x7e\n[    0.206482]  #2: ffffffff9ea77780 (console_owner){....}-{0:0}, at: console_emit_next_record.constprop.0+0x111/0x330\n[    0.206485] stack backtrace:\n[    0.206486] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.19.0-00428-g9de1f9c8ca51 #5\n[    0.206488] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.fc36 04/01/2014\n[    0.206489] Call Trace:\n[    0.206490]  <TASK>\n[    0.206491]  dump_stack_lvl+0x6a/0x9f\n[    0.206493]  __lock_acquire.cold+0x2d7/0x2fe\n[    0.206496]  ? stack_trace_save+0x46/0x70\n[    0.206497]  lock_acquire+0xd1/0x2f0\n[    0.206499]  ? serial8250_console_write+0x327/0x4a0\n[    0.206500]  ? __lock_acquire+0x5c7/0x2720\n[    0.206502]  _raw_spin_lock_irqsave+0x3d/0x90\n[    0.206504]  ? serial8250_console_write+0x327/0x4a0\n[    0.206506]  serial8250_console_write+0x327/0x4a0\n[    0.206508]  console_emit_next_record.constprop.0+0x180/0x330\n[    0.206511]  console_unlock+0xf7/0x1f0\n[    0.206512]  vprintk_emit+0xf7/0x330\n[    0.206514]  _printk+0x63/0x7e\n[    0.206516]  cblist_init_generic.constprop.0.cold+0x24/0x32\n[    0.206518]  rcu_init_tasks_generic+0x5/0xd9\n[    0.206522]  kernel_init_freeable+0x15b/0x2a2\n[    0.206523]  ? rest_init+0x160/0x160\n[    0.206526]  kernel_init+0x11/0x120\n[    0.206527]  ret_from_fork+0x1f/0x30\n[    0.206530]  </TASK>\n[    0.207018] cblist_init_generic: Setting shift to 1 and lim to 1.\n\nThis patch moves pr_info() so that it is called without\nrtp->cbs_gbl_lock locked."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/rcu/tasks.h"],"versions":[{"version":"ab97152f88a4d580b89f0b7cc3028ffac438216f","lessThan":"9027d69221ff96e1356f070f7feb2ff989ae7388","status":"affected","versionType":"git"},{"version":"ab97152f88a4d580b89f0b7cc3028ffac438216f","lessThan":"ea9b81c7d9104040b46a84d2303045de267f5557","status":"affected","versionType":"git"},{"version":"ab97152f88a4d580b89f0b7cc3028ffac438216f","lessThan":"5fc8cbe4cf0fd34ded8045c385790c3bf04f6785","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/rcu/tasks.h"],"versions":[{"version":"5.17","status":"affected"},{"version":"0","lessThan":"5.17","status":"unaffected","versionType":"semver"},{"version":"6.1.42","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.4.7","lessThanOrEqual":"6.4.*","status":"unaffected","versionType":"semver"},{"version":"6.5","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.1.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.4.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"6.5"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9027d69221ff96e1356f070f7feb2ff989ae7388"},{"url":"https://git.kernel.org/stable/c/ea9b81c7d9104040b46a84d2303045de267f5557"},{"url":"https://git.kernel.org/stable/c/5fc8cbe4cf0fd34ded8045c385790c3bf04f6785"}],"title":"rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()","x_generator":{"engine":"bippy-1.2.0"}}}}