{ "affected": [ { "ranges": [ { "events": [ { "introduced": "b6bbee0d2438a2c9c7525f5bd7047a8b2ce4f38f" }, { "fixed": "142c8165b7974b40fa62c393653edb5c00b8b5fe" }, { "fixed": "30b90b55201902b2b8edcdbe2315ccd4c7547002" }, { "fixed": "9b7d66ea88ae9395e42766b94a5c717b158b940a" }, { "fixed": "f5e6580a3a16a83c743ad5a7c16922854a0d8b71" }, { "fixed": "bc6e943794515d2a8417b02597a27bd377468d04" }, { "fixed": "bdf5deccfbf9f556a08d1d2ef52e9e48f969e53e" }, { "fixed": "4e5f753e8c280278c09f68fe728abf846e2bdfc1" }, { "fixed": "d219e7a8eed3802970c3e4d243d79c70ef0a31bf" }, { "fixed": "de329533792a373186d79dca1ca120f8fa0afd05" } ], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "type": "GIT" } ] }, { "package": { "ecosystem": "Linux", "name": "Kernel" }, "ranges": [ { "events": [ { "introduced": "4.9.0" }, { "fixed": "5.10.269" } ], "type": "ECOSYSTEM" }, { "events": [ { "introduced": "5.11.0" }, { "fixed": "5.15.220" } ], "type": "ECOSYSTEM" }, { "events": [ { "introduced": "5.16.0" }, { "fixed": "6.1.187" } ], "type": "ECOSYSTEM" }, { "events": [ { "introduced": "6.2.0" }, { "fixed": "6.6.156" } ], "type": "ECOSYSTEM" }, { "events": [ { "introduced": "6.7.0" }, { "fixed": "6.12.108" } ], "type": "ECOSYSTEM" }, { "events": [ { "introduced": "6.13.0" }, { "fixed": "6.18.49" } ], "type": "ECOSYSTEM" }, { "events": [ { "introduced": "6.19.0" }, { "fixed": "7.1.13" } ], "type": "ECOSYSTEM" }, { "events": [ { "introduced": "7.2.0" }, { "fixed": "7.2.3" } ], "type": "ECOSYSTEM" } ] } ], "database_specific": { "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80863.json" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix OOB in free_rd_atomic_resources()\n\nfree_rd_atomic_resources() iterates using qp-\u003eattr.max_dest_rd_atomic.\nUpdating max_dest_rd_atomic before freeing the old array can make the\nfree path walk past the old allocation and trigger a slab out-of-bounds\nwrite catched by KASAN:\n==================================================================\nBUG: KASAN: slab-out-of-bounds in free_rd_atomic_resource drivers/infiniband/sw/rxe/rxe_qp.c:180 [inline]\nBUG: KASAN: slab-out-of-bounds in free_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:171 [inline]\nBUG: KASAN: slab-out-of-bounds in free_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:163 [inline]\nBUG: KASAN: slab-out-of-bounds in rxe_qp_from_attr+0x1e88/0x2150 drivers/infiniband/sw/rxe/rxe_qp.c:712\nWrite of size 4 at addr ffff88802b8dddb8 by task syz.3.451/11063\n\nCPU: 0 UID: 0 PID: 11063 Comm: syz.3.451 Not tainted 7.1.0 #2 PREEMPT(full)\nHardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x10e/0x1f0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:378 [inline]\n print_report+0xf7/0x600 mm/kasan/report.c:482\n kasan_report+0xe4/0x120 mm/kasan/report.c:595\n free_rd_atomic_resource drivers/infiniband/sw/rxe/rxe_qp.c:180 [inline]\n free_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:171 [inline]\n free_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:163 [inline]\n rxe_qp_from_attr+0x1e88/0x2150 drivers/infiniband/sw/rxe/rxe_qp.c:712\n rxe_modify_qp+0x1e2/0x530 drivers/infiniband/sw/rxe/rxe_verbs.c:623\n ib_security_modify_qp+0x223/0xfa0 drivers/infiniband/core/security.c:625\n _ib_modify_qp+0x333/0xec0 drivers/infiniband/core/verbs.c:1915\n modify_qp+0x13ca/0x1940 drivers/infiniband/core/uverbs_cmd.c:1932\n ib_uverbs_modify_qp+0xcb/0x120 drivers/infiniband/core/uverbs_cmd.c:1958\n ib_uverbs_write+0xb86/0x1030 drivers/infiniband/core/uverbs_main.c:680\n vfs_write+0x2aa/0x1070 fs/read_write.c:686\n ksys_write+0x1f8/0x250 fs/read_write.c:740\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0x116/0x800 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fefc75a70cd\nCode: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 \u003c48\u003e 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48\nRSP: 002b:00007fefc8495018 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 00007fefc7835fa0 RCX: 00007fefc75a70cd\nRDX: 0000000000000078 RSI: 0000200000000240 RDI: 0000000000000007\nRBP: 00007fefc764f10f R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000\nR13: 00007fefc7836038 R14: 00007fefc7835fa0 R15: 00007ffcf0586aa0\n \u003c/TASK\u003e\n\nAllocated by task 11063:\n kasan_save_stack+0x33/0x60 mm/kasan/common.c:57\n kasan_save_track+0x14/0x30 mm/kasan/common.c:78\n poison_kmalloc_redzone mm/kasan/common.c:398 [inline]\n __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415\n kasan_kmalloc include/linux/kasan.h:263 [inline]\n __do_kmalloc_node mm/slub.c:5296 [inline]\n __kmalloc_noprof+0x32a/0x850 mm/slub.c:5308\n kmalloc_noprof include/linux/slab.h:954 [inline]\n kzalloc_noprof include/linux/slab.h:1188 [inline]\n alloc_rd_atomic_resources drivers/infiniband/sw/rxe/rxe_qp.c:155 [inline]\n rxe_qp_from_attr+0x3f8/0x2150 drivers/infiniband/sw/rxe/rxe_qp.c:714\n rxe_modify_qp+0x1e2/0x530 drivers/infiniband/sw/rxe/rxe_verbs.c:623\n ib_security_modify_qp+0x223/0xfa0 drivers/infiniband/core/security.c:625\n _ib_modify_qp+0x333/0xec0 drivers/infiniband/core/verbs.c:1915\n modify_qp+0x13ca/0x1940 drivers/infiniband/core/uverbs_cmd.c:1932\n ib_uverbs_modify_qp+0xcb/0x120 drivers/infiniband/core/uverbs_cmd.c:1958\n ib_uverbs_write+0xb86/0x1030 drivers/infiniband/core/uverbs_ma\n---truncated---", "id": "CVE-2026-80863", "modified": "2026-09-06T03:30:57.304071350Z", "published": "2026-09-04T15:55:17.668Z", "references": [ { "type": "WEB", "url": "https://git.kernel.org/stable/c/142c8165b7974b40fa62c393653edb5c00b8b5fe" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/30b90b55201902b2b8edcdbe2315ccd4c7547002" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/4e5f753e8c280278c09f68fe728abf846e2bdfc1" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/9b7d66ea88ae9395e42766b94a5c717b158b940a" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/bc6e943794515d2a8417b02597a27bd377468d04" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/bdf5deccfbf9f556a08d1d2ef52e9e48f969e53e" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/d219e7a8eed3802970c3e4d243d79c70ef0a31bf" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/de329533792a373186d79dca1ca120f8fa0afd05" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/f5e6580a3a16a83c743ad5a7c16922854a0d8b71" }, { "type": "ADVISORY", "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80863.json" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80863" }, { "type": "PACKAGE", "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git" } ], "schema_version": "1.9.0", "summary": "RDMA/rxe: Fix OOB in free_rd_atomic_resources()" }