{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50536","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-10-07T15:15:38.666Z","datePublished":"2025-10-07T15:21:03.056Z","dateUpdated":"2026-05-11T19:21:19.509Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:21:19.509Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix repeated calls to sock_put() when msg has more_data\n\nIn tcp_bpf_send_verdict() redirection, the eval variable is assigned to\n__SK_REDIRECT after the apply_bytes data is sent, if msg has more_data,\nsock_put() will be called multiple times.\n\nWe should reset the eval variable to __SK_NONE every time more_data\nstarts.\n\nThis causes:\n\nIPv4: Attempt to release TCP socket in state 1 00000000b4c925d7\n------------[ cut here ]------------\nrefcount_t: addition on 0; use-after-free.\nWARNING: CPU: 5 PID: 4482 at lib/refcount.c:25 refcount_warn_saturate+0x7d/0x110\nModules linked in:\nCPU: 5 PID: 4482 Comm: sockhash_bypass Kdump: loaded Not tainted 6.0.0 #1\nHardware name: Red Hat KVM, BIOS 1.11.0-2.el7 04/01/2014\nCall Trace:\n <TASK>\n __tcp_transmit_skb+0xa1b/0xb90\n ? __alloc_skb+0x8c/0x1a0\n ? __kmalloc_node_track_caller+0x184/0x320\n tcp_write_xmit+0x22a/0x1110\n __tcp_push_pending_frames+0x32/0xf0\n do_tcp_sendpages+0x62d/0x640\n tcp_bpf_push+0xae/0x2c0\n tcp_bpf_sendmsg_redir+0x260/0x410\n ? preempt_count_add+0x70/0xa0\n tcp_bpf_send_verdict+0x386/0x4b0\n tcp_bpf_sendmsg+0x21b/0x3b0\n sock_sendmsg+0x58/0x70\n __sys_sendto+0xfa/0x170\n ? xfd_validate_state+0x1d/0x80\n ? switch_fpu_return+0x59/0xe0\n __x64_sys_sendto+0x24/0x30\n do_syscall_64+0x37/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_bpf.c"],"versions":[{"version":"5f0bfe21c853917aae4bc5a70fe57ddb4054443e","lessThan":"7508b9f4daac4ec7dfe0b6fb2d688b1c1c105e10","status":"affected","versionType":"git"},{"version":"15dec6d8f8642a26d6a272af2d7f9877df8f02b8","lessThan":"28e4a763cd4a2b1a78852216ef4bd7df3a05cec6","status":"affected","versionType":"git"},{"version":"cd9733f5d75c94a32544d6ce5be47e14194cf137","lessThan":"8786bde11a4f31b63b3036731df0b47337a7a245","status":"affected","versionType":"git"},{"version":"cd9733f5d75c94a32544d6ce5be47e14194cf137","lessThan":"578a7628b838a3ac8ad61deaab5a816ff032ac13","status":"affected","versionType":"git"},{"version":"cd9733f5d75c94a32544d6ce5be47e14194cf137","lessThan":"113236e8f49f262f318c00ebb14b15f4834e87c1","status":"affected","versionType":"git"},{"version":"cd9733f5d75c94a32544d6ce5be47e14194cf137","lessThan":"7a9841ca025275b5b0edfb0b618934abb6ceec15","status":"affected","versionType":"git"},{"version":"6f226ffe4458ea3b8c33287cb8c86f87dc198dce","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/ipv4/tcp_bpf.c"],"versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","status":"unaffected","versionType":"semver"},{"version":"5.4.229","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.163","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.86","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.0.16","lessThanOrEqual":"6.0.*","status":"unaffected","versionType":"semver"},{"version":"6.1.2","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2","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":"5.4.157","versionEndExcluding":"5.4.229"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.77","versionEndExcluding":"5.10.163"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.0.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.14.16"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/7508b9f4daac4ec7dfe0b6fb2d688b1c1c105e10"},{"url":"https://git.kernel.org/stable/c/28e4a763cd4a2b1a78852216ef4bd7df3a05cec6"},{"url":"https://git.kernel.org/stable/c/8786bde11a4f31b63b3036731df0b47337a7a245"},{"url":"https://git.kernel.org/stable/c/578a7628b838a3ac8ad61deaab5a816ff032ac13"},{"url":"https://git.kernel.org/stable/c/113236e8f49f262f318c00ebb14b15f4834e87c1"},{"url":"https://git.kernel.org/stable/c/7a9841ca025275b5b0edfb0b618934abb6ceec15"}],"title":"bpf, sockmap: Fix repeated calls to sock_put() when msg has more_data","x_generator":{"engine":"bippy-1.2.0"}}}}