{"id":"CVE-2022-50885","title":"RDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed\n\nThere is a null-ptr-deref when mount.cifs over rdma:\n\n  BUG: KASAN: null-ptr-deref in rxe…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < ee24de095569935eba600f7735e8e8ddea5b418e","Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < 7340ca9f782be6fbe3f64a134dc112772764f766","Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < bd7106a6004f1077a365ca7f5a99c7a708e20714","Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < 6bb5a62bfd624039b05157745c234068508393a9","Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < f64f08b9e6fb305a25dd75329e06ae342b9ce336","Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < 5b924632d84a60bc0c7fe6e9bbbce99d03908957","Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < 821f9a18210f6b9fd6792471714c799607b25db4","Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < f67376d801499f4fa0838c18c1efcad8840e550d","Linux 4.8"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-15T21:32:47.298807Z"},"published":"2025-12-30","updated":"2026-10-15","sourceUpdated":"2026-10-15T21:41:24.572Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-50885","references":[{"url":"https://git.kernel.org/stable/c/ee24de095569935eba600f7735e8e8ddea5b418e"},{"url":"https://git.kernel.org/stable/c/7340ca9f782be6fbe3f64a134dc112772764f766"},{"url":"https://git.kernel.org/stable/c/bd7106a6004f1077a365ca7f5a99c7a708e20714"},{"url":"https://git.kernel.org/stable/c/6bb5a62bfd624039b05157745c234068508393a9"},{"url":"https://git.kernel.org/stable/c/f64f08b9e6fb305a25dd75329e06ae342b9ce336"},{"url":"https://git.kernel.org/stable/c/5b924632d84a60bc0c7fe6e9bbbce99d03908957"},{"url":"https://git.kernel.org/stable/c/821f9a18210f6b9fd6792471714c799607b25db4"},{"url":"https://git.kernel.org/stable/c/f67376d801499f4fa0838c18c1efcad8840e550d"}],"tags":["cve.org"],"epss":0.006,"epssPercentile":0.47489,"ingestedAt":"2026-10-15T22:48:25.384Z","slug":"CVE-2022-50885","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix NULL-ptr-deref in rxe_qp_do_cleanup() when socket create failed\n\nThere is a null-ptr-deref when mount.cifs over rdma:\n\n  BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]\n  Read of size 8 at addr 0000000000000018 by task mount.cifs/3046\n\n  CPU: 2 PID: 3046 Comm: mount.cifs Not tainted 6.1.0-rc5+ #62\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc3\n  Call Trace:\n   <TASK>\n   dump_stack_lvl+0x34/0x44\n   kasan_report+0xad/0x130\n   rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]\n   execute_in_process_context+0x25/0x90\n   __rxe_cleanup+0x101/0x1d0 [rdma_rxe]\n   rxe_create_qp+0x16a/0x180 [rdma_rxe]\n   create_qp.part.0+0x27d/0x340\n   ib_create_qp_kernel+0x73/0x160\n   rdma_create_qp+0x100/0x230\n   _smbd_get_connection+0x752/0x20f0\n   smbd_get_connection+0x21/0x40\n   cifs_get_tcp_session+0x8ef/0xda0\n   mount_get_conns+0x60/0x750\n   cifs_mount+0x103/0xd00\n   cifs_smb3_do_mount+0x1dd/0xcb0\n   smb3_get_tree+0x1d5/0x300\n   vfs_get_tree+0x41/0xf0\n   path_mount+0x9b3/0xdd0\n   __x64_sys_mount+0x190/0x1d0\n   do_syscall_64+0x35/0x80\n   entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nThe root cause of the issue is the socket create failed in\nrxe_qp_init_req().\n\nSo move the reset rxe_qp_do_cleanup() after the NULL ptr check.\n\n## Affected\n\n- `Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < ee24de095569935eba600f7735e8e8ddea5b418e`\n- `Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < 7340ca9f782be6fbe3f64a134dc112772764f766`\n- `Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < bd7106a6004f1077a365ca7f5a99c7a708e20714`\n- `Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < 6bb5a62bfd624039b05157745c234068508393a9`\n- `Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < f64f08b9e6fb305a25dd75329e06ae342b9ce336`\n- `Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < 5b924632d84a60bc0c7fe6e9bbbce99d03908957`\n- `Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < 821f9a18210f6b9fd6792471714c799607b25db4`\n- `Linux >= 8700e3e7c4857d28ebaa824509934556da0b3e76 < f67376d801499f4fa0838c18c1efcad8840e550d`\n- `Linux 4.8`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}