In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
RDMA\/rxe: Fix OOB in free_rd_atomic_resources()<\/p>\n
free_rd_atomic_resources() iterates using qp->attr.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<\/p>\n
CPU: 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:<\/p>\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 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<\/p>\n
Allocated 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—<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
RDMA\/rxe: Fix OOB in free_rd_atomic_resources()<\/p>\n
free_rd_atomic_resources() iterates using qp->attr.max_dest_rd_atomic.
\nUpdating ma<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17367","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17367","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}