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CVE-2023-52803

Status Candidate

Overview

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Fix RPC client cleaned up the freed pipefs dentries RPC client pipefs dentries cleanup is in separated rpc_remove_pipedir() workqueue,which takes care about pipefs superblock locking. In some special scenarios, when kernel frees the pipefs sb of the current client and immediately alloctes a new pipefs sb, rpc_remove_pipedir function would misjudge the existence of pipefs sb which is not the one it used to hold. As a result, the rpc_remove_pipedir would clean the released freed pipefs dentries. To fix this issue, rpc_remove_pipedir should check whether the current pipefs sb is consistent with the original pipefs sb. This error can be catched by KASAN: ========================================================= [ 250.497700] BUG: KASAN: slab-use-after-free in dget_parent+0x195/0x200 [ 250.498315] Read of size 4 at addr ffff88800a2ab804 by task kworker/0:18/106503 [ 250.500549] Workqueue: events rpc_free_client_work [ 250.501001] Call Trace: [ 250.502880] kasan_report+0xb6/0xf0 [ 250.503209] ? dget_parent+0x195/0x200 [ 250.503561] dget_parent+0x195/0x200 [ 250.503897] ? __pfx_rpc_clntdir_depopulate+0x10/0x10 [ 250.504384] rpc_rmdir_depopulate+0x1b/0x90 [ 250.504781] rpc_remove_client_dir+0xf5/0x150 [ 250.505195] rpc_free_client_work+0xe4/0x230 [ 250.505598] process_one_work+0x8ee/0x13b0 ... [ 22.039056] Allocated by task 244: [ 22.039390] kasan_save_stack+0x22/0x50 [ 22.039758] kasan_set_track+0x25/0x30 [ 22.040109] __kasan_slab_alloc+0x59/0x70 [ 22.040487] kmem_cache_alloc_lru+0xf0/0x240 [ 22.040889] __d_alloc+0x31/0x8e0 [ 22.041207] d_alloc+0x44/0x1f0 [ 22.041514] __rpc_lookup_create_exclusive+0x11c/0x140 [ 22.041987] rpc_mkdir_populate.constprop.0+0x5f/0x110 [ 22.042459] rpc_create_client_dir+0x34/0x150 [ 22.042874] rpc_setup_pipedir_sb+0x102/0x1c0 [ 22.043284] rpc_client_register+0x136/0x4e0 [ 22.043689] rpc_new_client+0x911/0x1020 [ 22.044057] rpc_create_xprt+0xcb/0x370 [ 22.044417] rpc_create+0x36b/0x6c0 ... [ 22.049524] Freed by task 0: [ 22.049803] kasan_save_stack+0x22/0x50 [ 22.050165] kasan_set_track+0x25/0x30 [ 22.050520] kasan_save_free_info+0x2b/0x50 [ 22.050921] __kasan_slab_free+0x10e/0x1a0 [ 22.051306] kmem_cache_free+0xa5/0x390 [ 22.051667] rcu_core+0x62c/0x1930 [ 22.051995] __do_softirq+0x165/0x52a [ 22.052347] [ 22.052503] Last potentially related work creation: [ 22.052952] kasan_save_stack+0x22/0x50 [ 22.053313] __kasan_record_aux_stack+0x8e/0xa0 [ 22.053739] __call_rcu_common.constprop.0+0x6b/0x8b0 [ 22.054209] dentry_free+0xb2/0x140 [ 22.054540] __dentry_kill+0x3be/0x540 [ 22.054900] shrink_dentry_list+0x199/0x510 [ 22.055293] shrink_dcache_parent+0x190/0x240 [ 22.055703] do_one_tree+0x11/0x40 [ 22.056028] shrink_dcache_for_umount+0x61/0x140 [ 22.056461] generic_shutdown_super+0x70/0x590 [ 22.056879] kill_anon_super+0x3a/0x60 [ 22.057234] rpc_kill_sb+0x121/0x200

Related Files

Ubuntu Security Notice USN-7003-5
Posted Oct 2, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 7003-5 - It was discovered that the JFS file system contained an out-of-bounds read vulnerability when printing xattr debug information. A local attacker could use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-52803, CVE-2024-36894, CVE-2024-36978, CVE-2024-38619, CVE-2024-39487, CVE-2024-39495, CVE-2024-39502, CVE-2024-39506, CVE-2024-39509, CVE-2024-40902, CVE-2024-40904, CVE-2024-40905, CVE-2024-40934, CVE-2024-40941
SHA-256 | e57d853b0390f83094b938450c8016f8fb2162c14c9c0b034d166c25cbb6646a
Ubuntu Security Notice USN-7003-4
Posted Sep 26, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 7003-4 - It was discovered that the JFS file system contained an out-of-bounds read vulnerability when printing xattr debug information. A local attacker could use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-52803, CVE-2023-52887, CVE-2024-36974, CVE-2024-36978, CVE-2024-37078, CVE-2024-38619, CVE-2024-39469, CVE-2024-39487, CVE-2024-39499, CVE-2024-39502, CVE-2024-39505, CVE-2024-39506, CVE-2024-39509, CVE-2024-40902
SHA-256 | c85181693b4ae184acd8611269c3c7857764f26f86f84d4df3a4650c59c7d69d
Ubuntu Security Notice USN-7003-3
Posted Sep 13, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 7003-3 - It was discovered that the JFS file system contained an out-of-bounds read vulnerability when printing xattr debug information. A local attacker could use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-52803, CVE-2023-52887, CVE-2024-36974, CVE-2024-36978, CVE-2024-39487, CVE-2024-39501, CVE-2024-39502, CVE-2024-39505, CVE-2024-39509, CVE-2024-40902, CVE-2024-40905, CVE-2024-40912, CVE-2024-40916, CVE-2024-40932
SHA-256 | 67a8e70c37141ad551107083f7f1ccc236a35da5fef412d966bd74b44f5a1985
Ubuntu Security Notice USN-7006-1
Posted Sep 12, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 7006-1 - It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel, leading to a null pointer dereference vulnerability. A privileged local attacker could use this to possibly cause a denial of service. It was discovered that the JFS file system contained an out-of-bounds read vulnerability when printing xattr debug information. A local attacker could use this to cause a denial of service.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-46926, CVE-2023-52803, CVE-2023-52887, CVE-2024-24860, CVE-2024-26830, CVE-2024-26921, CVE-2024-26929, CVE-2024-36894, CVE-2024-36901, CVE-2024-36978, CVE-2024-37078, CVE-2024-39469, CVE-2024-39484, CVE-2024-39487
SHA-256 | bfa1f853c40c5f477c198c988120fbd6fe68320fbaf6055c26d7c823fb626082
Ubuntu Security Notice USN-7003-2
Posted Sep 12, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 7003-2 - It was discovered that the JFS file system contained an out-of-bounds read vulnerability when printing xattr debug information. A local attacker could use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-52803, CVE-2024-36978, CVE-2024-37078, CVE-2024-38619, CVE-2024-39469, CVE-2024-39487, CVE-2024-39495, CVE-2024-39501, CVE-2024-39502, CVE-2024-39509, CVE-2024-40902, CVE-2024-40905, CVE-2024-40934, CVE-2024-40942
SHA-256 | b9ccf0915602448265ab710de51d14e93875c6b9ca20f10baf002ab90a58470e
Ubuntu Security Notice USN-7003-1
Posted Sep 12, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 7003-1 - It was discovered that the JFS file system contained an out-of-bounds read vulnerability when printing xattr debug information. A local attacker could use this to cause a denial of service. Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-52803, CVE-2023-52887, CVE-2024-36978, CVE-2024-39469, CVE-2024-39487, CVE-2024-39499, CVE-2024-39501, CVE-2024-39502, CVE-2024-39503, CVE-2024-39509, CVE-2024-40902, CVE-2024-40904, CVE-2024-40905, CVE-2024-40912
SHA-256 | 7d5b0465fc8b365d164e7403ac3a399c1d198dc1157f8ad403f32d2ffbadf1a2
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