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CVE-2024-26586

Status Candidate

Overview

In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_acl_tcam: Fix stack corruption When tc filters are first added to a net device, the corresponding local port gets bound to an ACL group in the device. The group contains a list of ACLs. In turn, each ACL points to a different TCAM region where the filters are stored. During forwarding, the ACLs are sequentially evaluated until a match is found. One reason to place filters in different regions is when they are added with decreasing priorities and in an alternating order so that two consecutive filters can never fit in the same region because of their key usage. In Spectrum-2 and newer ASICs the firmware started to report that the maximum number of ACLs in a group is more than 16, but the layout of the register that configures ACL groups (PAGT) was not updated to account for that. It is therefore possible to hit stack corruption [1] in the rare case where more than 16 ACLs in a group are required. Fix by limiting the maximum ACL group size to the minimum between what the firmware reports and the maximum ACLs that fit in the PAGT register. Add a test case to make sure the machine does not crash when this condition is hit. [1] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: mlxsw_sp_acl_tcam_group_update+0x116/0x120 [...] dump_stack_lvl+0x36/0x50 panic+0x305/0x330 __stack_chk_fail+0x15/0x20 mlxsw_sp_acl_tcam_group_update+0x116/0x120 mlxsw_sp_acl_tcam_group_region_attach+0x69/0x110 mlxsw_sp_acl_tcam_vchunk_get+0x492/0xa20 mlxsw_sp_acl_tcam_ventry_add+0x25/0xe0 mlxsw_sp_acl_rule_add+0x47/0x240 mlxsw_sp_flower_replace+0x1a9/0x1d0 tc_setup_cb_add+0xdc/0x1c0 fl_hw_replace_filter+0x146/0x1f0 fl_change+0xc17/0x1360 tc_new_tfilter+0x472/0xb90 rtnetlink_rcv_msg+0x313/0x3b0 netlink_rcv_skb+0x58/0x100 netlink_unicast+0x244/0x390 netlink_sendmsg+0x1e4/0x440 ____sys_sendmsg+0x164/0x260 ___sys_sendmsg+0x9a/0xe0 __sys_sendmsg+0x7a/0xc0 do_syscall_64+0x40/0xe0 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Related Files

Ubuntu Security Notice USN-6896-5
Posted Jul 23, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6896-5 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Atheros 802.11ac wireless driver did not properly validate certain data structures, leading to a NULL pointer dereference. An attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2022-48627, CVE-2023-52620, CVE-2023-52656, CVE-2023-52699, CVE-2023-52880, CVE-2023-6270, CVE-2023-7042, CVE-2024-22099, CVE-2024-23307, CVE-2024-24858, CVE-2024-24861, CVE-2024-25739, CVE-2024-26586, CVE-2024-26642
SHA-256 | df9560dc3783d3d4a0c9d99e6352e1f6ea6dd5c66518086f9ad8789fbd721813
Ubuntu Security Notice USN-6896-4
Posted Jul 19, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6896-4 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Atheros 802.11ac wireless driver did not properly validate certain data structures, leading to a NULL pointer dereference. An attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2022-48627, CVE-2023-52620, CVE-2023-52644, CVE-2023-52656, CVE-2023-52699, CVE-2023-52880, CVE-2023-6270, CVE-2023-7042, CVE-2024-22099, CVE-2024-23307, CVE-2024-24858, CVE-2024-24861, CVE-2024-25739, CVE-2024-26586
SHA-256 | 8dd27500ca03c621e3b332d4f4a48899a12b1e1709641167738660d0e4522fab
Ubuntu Security Notice USN-6896-3
Posted Jul 17, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6896-3 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Atheros 802.11ac wireless driver did not properly validate certain data structures, leading to a NULL pointer dereference. An attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2022-48627, CVE-2023-52656, CVE-2023-52699, CVE-2023-6270, CVE-2023-7042, CVE-2024-22099, CVE-2024-23307, CVE-2024-24858, CVE-2024-24861, CVE-2024-25739, CVE-2024-26586, CVE-2024-26687, CVE-2024-26812, CVE-2024-26813
SHA-256 | a1423a94bbd0e244b50a9dcc42a0d161e6c9763ef9a664b4bc82761901f3c48b
Ubuntu Security Notice USN-6896-2
Posted Jul 16, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6896-2 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Atheros 802.11ac wireless driver did not properly validate certain data structures, leading to a NULL pointer dereference. An attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2022-48627, CVE-2023-52620, CVE-2023-52650, CVE-2023-52656, CVE-2023-52699, CVE-2023-52880, CVE-2023-6270, CVE-2023-7042, CVE-2024-22099, CVE-2024-23307, CVE-2024-24858, CVE-2024-24861, CVE-2024-25739, CVE-2024-26586
SHA-256 | dd9e0f93243e62103de4d357f064855355dac13a553ba3fe9e049172d42486a0
Ubuntu Security Notice USN-6896-1
Posted Jul 12, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6896-1 - It was discovered that the ATA over Ethernet driver in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the Atheros 802.11ac wireless driver did not properly validate certain data structures, leading to a NULL pointer dereference. An attacker could possibly use this to cause a denial of service.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2022-48627, CVE-2023-52620, CVE-2023-52644, CVE-2023-52656, CVE-2023-52699, CVE-2023-6270, CVE-2023-7042, CVE-2024-22099, CVE-2024-23307, CVE-2024-24858, CVE-2024-24861, CVE-2024-25739, CVE-2024-26586, CVE-2024-26642
SHA-256 | 23031a0845782c0666fea9cf551de81c3f62aa5f01672ed9481d97357d4ec438
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