Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem… (CVE-2025-38022)
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xc3/0x670 mm/kasan/report.c:521 kasan_report+0xe0/0x110 mm/kasan/report.c:634 strlen+0x93/0xa0 lib/string.c:420 __fortify_strlen include/linux/fortify-string.h:268 [inline] get_kobj_path_length lib/kobject.c:118 [inline] kobject_get_path+0x3f/0x2a0 lib/kobject.c:158 kobject_uevent_env+0x289/0x1870 lib/kobject_uevent.c:545 ib_register_device drivers/infiniband/core/device.c:1472 [inline] ib_register_device+0x8cf/0xe00 drivers/infiniband/core/device.c:1393 rxe_register_device+0x275/0x320 drivers/infiniband/sw/rxe/rxe_verbs.c:1552 rxe_net_add+0x8e/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:550 rxe_newlink+0x70/0x190 drivers/infiniband/sw/rxe/rxe.c:225 nldev_newlink+0x3a3/0x680 drivers/infiniband/core/nldev.c:1796 rdma_nl_rcv_msg+0x387/0x6e0 drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb.constprop.0.isra.0+0x2e5/0x450 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmsg+0x16d/0x220 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f This problem is similar to the problem that the commit 1d6a9e7449e2 ("RDMA/core: Fix use-after-free when rename device name") fixes. The root cause is: the function ib_device_rename() renames the name with lock. But in the function kobject_uevent(), this name is accessed without lock protection at the same time. The solution is to add the lock protection when this name is accessed in the function kobject_uevent().
AI Analysis
Technical Summary
The advisory covers four distinct vulnerabilities in the Linux kernel: CVE-2025-38022 fixes a use-after-free read in the RDMA core during device registration; CVE-2025-38568 addresses a stack out-of-bounds write in the multi-queue priority scheduler's traffic control entry parsing; CVE-2025-40294 resolves an out-of-bounds write in Bluetooth management that could cause information disclosure and denial of service; and CVE-2025-40322 fixes an out-of-bounds read in font glyph handling leading to similar impacts. These vulnerabilities are rated as moderate severity by Red Hat and affect Red Hat Enterprise Linux 9.4 Extended Update Support and related variants. The advisory provides updated kernel packages to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities may allow an attacker to cause denial of service or gain unauthorized information disclosure on affected systems running the vulnerable Linux kernel versions. The issues involve memory safety errors such as use-after-free and out-of-bounds accesses in critical kernel components, which can compromise system stability and confidentiality.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 9.4 Extended Update Support and related variants should apply the security update as detailed in the Red Hat advisory RHSA-2026:2594. A system reboot is required for the update to take effect. No additional mitigations are specified by the vendor.
Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem… (CVE-2025-38022)
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:408 [inline] print_report+0xc3/0x670 mm/kasan/report.c:521 kasan_report+0xe0/0x110 mm/kasan/report.c:634 strlen+0x93/0xa0 lib/string.c:420 __fortify_strlen include/linux/fortify-string.h:268 [inline] get_kobj_path_length lib/kobject.c:118 [inline] kobject_get_path+0x3f/0x2a0 lib/kobject.c:158 kobject_uevent_env+0x289/0x1870 lib/kobject_uevent.c:545 ib_register_device drivers/infiniband/core/device.c:1472 [inline] ib_register_device+0x8cf/0xe00 drivers/infiniband/core/device.c:1393 rxe_register_device+0x275/0x320 drivers/infiniband/sw/rxe/rxe_verbs.c:1552 rxe_net_add+0x8e/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:550 rxe_newlink+0x70/0x190 drivers/infiniband/sw/rxe/rxe.c:225 nldev_newlink+0x3a3/0x680 drivers/infiniband/core/nldev.c:1796 rdma_nl_rcv_msg+0x387/0x6e0 drivers/infiniband/core/netlink.c:195 rdma_nl_rcv_skb.constprop.0.isra.0+0x2e5/0x450 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmsg+0x16d/0x220 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f This problem is similar to the problem that the commit 1d6a9e7449e2 ("RDMA/core: Fix use-after-free when rename device name") fixes. The root cause is: the function ib_device_rename() renames the name with lock. But in the function kobject_uevent(), this name is accessed without lock protection at the same time. The solution is to add the lock protection when this name is accessed in the function kobject_uevent().
CVSS v3.1
Score 7.8high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The advisory covers four distinct vulnerabilities in the Linux kernel: CVE-2025-38022 fixes a use-after-free read in the RDMA core during device registration; CVE-2025-38568 addresses a stack out-of-bounds write in the multi-queue priority scheduler's traffic control entry parsing; CVE-2025-40294 resolves an out-of-bounds write in Bluetooth management that could cause information disclosure and denial of service; and CVE-2025-40322 fixes an out-of-bounds read in font glyph handling leading to similar impacts. These vulnerabilities are rated as moderate severity by Red Hat and affect Red Hat Enterprise Linux 9.4 Extended Update Support and related variants. The advisory provides updated kernel packages to remediate these issues.
Potential Impact
Successful exploitation of these vulnerabilities may allow an attacker to cause denial of service or gain unauthorized information disclosure on affected systems running the vulnerable Linux kernel versions. The issues involve memory safety errors such as use-after-free and out-of-bounds accesses in critical kernel components, which can compromise system stability and confidentiality.
Mitigation Recommendations
Red Hat has released updated kernel packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 9.4 Extended Update Support and related variants should apply the security update as detailed in the Red Hat advisory RHSA-2026:2594. A system reboot is required for the update to take effect. No additional mitigations are specified by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:2594
- Cve Count
- 4
- Additional Cves
- ["CVE-2025-38568","CVE-2025-40294","CVE-2025-40322"]
- Cvss Version
- null
Threat ID: 6a3caf104853345fc153cadf
Added to database: 06/25/2026, 04:31:12 UTC
Last enriched: 06/25/2026, 05:01:14 UTC
Last updated: 08/24/2026, 22:52:05 UTC
Views: 141
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