{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-48954","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-08-22T01:27:53.627Z","datePublished":"2024-10-21T20:05:41.057Z","dateUpdated":"2025-05-04T08:26:51.141Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:26:51.141Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/qeth: fix use-after-free in hsci\n\nKASAN found that addr was dereferenced after br2dev_event_work was freed.\n\n==================================================================\nBUG: KASAN: use-after-free in qeth_l2_br2dev_worker+0x5ba/0x6b0\nRead of size 1 at addr 00000000fdcea440 by task kworker/u760:4/540\nCPU: 17 PID: 540 Comm: kworker/u760:4 Tainted: G            E      6.1.0-20221128.rc7.git1.5aa3bed4ce83.300.fc36.s390x+kasan #1\nHardware name: IBM 8561 T01 703 (LPAR)\nWorkqueue: 0.0.8000_event qeth_l2_br2dev_worker\nCall Trace:\n [<000000016944d4ce>] dump_stack_lvl+0xc6/0xf8\n [<000000016942cd9c>] print_address_description.constprop.0+0x34/0x2a0\n [<000000016942d118>] print_report+0x110/0x1f8\n [<0000000167a7bd04>] kasan_report+0xfc/0x128\n [<000000016938d79a>] qeth_l2_br2dev_worker+0x5ba/0x6b0\n [<00000001673edd1e>] process_one_work+0x76e/0x1128\n [<00000001673ee85c>] worker_thread+0x184/0x1098\n [<000000016740718a>] kthread+0x26a/0x310\n [<00000001672c606a>] __ret_from_fork+0x8a/0xe8\n [<00000001694711da>] ret_from_fork+0xa/0x40\nAllocated by task 108338:\n kasan_save_stack+0x40/0x68\n kasan_set_track+0x36/0x48\n __kasan_kmalloc+0xa0/0xc0\n qeth_l2_switchdev_event+0x25a/0x738\n atomic_notifier_call_chain+0x9c/0xf8\n br_switchdev_fdb_notify+0xf4/0x110\n fdb_notify+0x122/0x180\n fdb_add_entry.constprop.0.isra.0+0x312/0x558\n br_fdb_add+0x59e/0x858\n rtnl_fdb_add+0x58a/0x928\n rtnetlink_rcv_msg+0x5f8/0x8d8\n netlink_rcv_skb+0x1f2/0x408\n netlink_unicast+0x570/0x790\n netlink_sendmsg+0x752/0xbe0\n sock_sendmsg+0xca/0x110\n ____sys_sendmsg+0x510/0x6a8\n ___sys_sendmsg+0x12a/0x180\n __sys_sendmsg+0xe6/0x168\n __do_sys_socketcall+0x3c8/0x468\n do_syscall+0x22c/0x328\n __do_syscall+0x94/0xf0\n system_call+0x82/0xb0\nFreed by task 540:\n kasan_save_stack+0x40/0x68\n kasan_set_track+0x36/0x48\n kasan_save_free_info+0x4c/0x68\n ____kasan_slab_free+0x14e/0x1a8\n __kasan_slab_free+0x24/0x30\n __kmem_cache_free+0x168/0x338\n qeth_l2_br2dev_worker+0x154/0x6b0\n process_one_work+0x76e/0x1128\n worker_thread+0x184/0x1098\n kthread+0x26a/0x310\n __ret_from_fork+0x8a/0xe8\n ret_from_fork+0xa/0x40\nLast potentially related work creation:\n kasan_save_stack+0x40/0x68\n __kasan_record_aux_stack+0xbe/0xd0\n insert_work+0x56/0x2e8\n __queue_work+0x4ce/0xd10\n queue_work_on+0xf4/0x100\n qeth_l2_switchdev_event+0x520/0x738\n atomic_notifier_call_chain+0x9c/0xf8\n br_switchdev_fdb_notify+0xf4/0x110\n fdb_notify+0x122/0x180\n fdb_add_entry.constprop.0.isra.0+0x312/0x558\n br_fdb_add+0x59e/0x858\n rtnl_fdb_add+0x58a/0x928\n rtnetlink_rcv_msg+0x5f8/0x8d8\n netlink_rcv_skb+0x1f2/0x408\n netlink_unicast+0x570/0x790\n netlink_sendmsg+0x752/0xbe0\n sock_sendmsg+0xca/0x110\n ____sys_sendmsg+0x510/0x6a8\n ___sys_sendmsg+0x12a/0x180\n __sys_sendmsg+0xe6/0x168\n __do_sys_socketcall+0x3c8/0x468\n do_syscall+0x22c/0x328\n __do_syscall+0x94/0xf0\n system_call+0x82/0xb0\nSecond to last potentially related work creation:\n kasan_save_stack+0x40/0x68\n __kasan_record_aux_stack+0xbe/0xd0\n kvfree_call_rcu+0xb2/0x760\n kernfs_unlink_open_file+0x348/0x430\n kernfs_fop_release+0xc2/0x320\n __fput+0x1ae/0x768\n task_work_run+0x1bc/0x298\n exit_to_user_mode_prepare+0x1a0/0x1a8\n __do_syscall+0x94/0xf0\n system_call+0x82/0xb0\nThe buggy address belongs to the object at 00000000fdcea400\n which belongs to the cache kmalloc-96 of size 96\nThe buggy address is located 64 bytes inside of\n 96-byte region [00000000fdcea400, 00000000fdcea460)\nThe buggy address belongs to the physical page:\npage:000000005a9c26e8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfdcea\nflags: 0x3ffff00000000200(slab|node=0|zone=1|lastcpupid=0x1ffff)\nraw: 3ffff00000000200 0000000000000000 0000000100000122 000000008008cc00\nraw: 0000000000000000 0020004100000000 ffffffff00000001 0000000000000000\npage dumped because: kasan: bad access detected\nMemory state around the buggy address:\n 00000000fdcea300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc\n 00000000fdcea380: fb fb fb fb fb fb f\n---truncated---"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/s390/net/qeth_l2_main.c"],"versions":[{"version":"f7936b7b2663c99a096a5c432ba96ab1e91a6c0f","lessThan":"db6343a5b0d9661f2dd76f653c6d274d38234d2b","status":"affected","versionType":"git"},{"version":"f7936b7b2663c99a096a5c432ba96ab1e91a6c0f","lessThan":"bde0dfc7c4569406a6ddeec363d04a1df7b3073f","status":"affected","versionType":"git"},{"version":"f7936b7b2663c99a096a5c432ba96ab1e91a6c0f","lessThan":"ebaaadc332cd21e9df4dcf9ce12552d9354bbbe4","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/s390/net/qeth_l2_main.c"],"versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","status":"unaffected","versionType":"semver"},{"version":"5.15.83","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.0.13","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1","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":"5.15","versionEndExcluding":"5.15.83"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/db6343a5b0d9661f2dd76f653c6d274d38234d2b"},{"url":"https://git.kernel.org/stable/c/bde0dfc7c4569406a6ddeec363d04a1df7b3073f"},{"url":"https://git.kernel.org/stable/c/ebaaadc332cd21e9df4dcf9ce12552d9354bbbe4"}],"title":"s390/qeth: fix use-after-free in hsci","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2022-48954","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-10-22T13:21:15.283243Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-10-22T13:28:40.195Z"}}]}}