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ALSA-2024:4583 — Important: kernel security update

Affected: AlmaLinux:9: bpftool, AlmaLinux:9: kernel, AlmaLinux:9: kernel-64k, AlmaLinux:9: kernel-64k-core, AlmaLinux:9: kernel-64k-debug, AlmaLinux:9: kernel-64k-debug-core, AlmaLinux:9: kernel-64k-debug-devel, AlmaLinux:9: kernel-64k-debug-devel-matched, AlmaLinux:9: kernel-64k-debug-modules, AlmaLinux:9: kernel-64k-debug-modules-core and 52 more

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: TIPC message reassembly use-after-free remote code execution vulnerability (CVE-2024-36886) * kernel: ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port() (CVE-2021-47548) * kernel: net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg (CVE-2021-47596) * kernel: vt: fix memory overlapping when deleting chars in the buffer (CVE-2022-48627) * kernel: can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock (CVE-2023-52638) * kernel: mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index (CVE-2024-26783) * kernel: net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map (CVE-2024-26858) * kernel: netfilter: nf_tables: use timestamp to check for set element timeout (CVE-2024-27397) * kernel: nvme: fix reconnection fail due to reserved tag allocation (CVE-2024-27435) * kernel: net: ena: Fix incorrect descriptor free behavior (CVE-2024-35958) * kernel: tcp: Use refcount_inc_not_zero() in tcp_twsk_unique(). (CVE-2024-36904) * kernel: lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure (CVE-2024-38543) * kernel: r8169: Fix possible ring buffer corruption on fragmented Tx packets. (CVE-2024-38586) * kernel: net: micrel: Fix receiving the timestamp in the frame for lan8841 (CVE-2024-38593) *…

bdu:2024-04557

BELL-CVE-2024-36904

Affected: Alpaquita:23: linux-lts, Alpaquita:25: linux-lts, Alpaquita:stream: linux-lts

certfr-2024-avi-0472 — De multiples vulnérabilités ont été découvertes dans le noyau Linux de Debian. Elles permettent à un attaquant de provo…

certfr-2024-avi-0472

EUVD-2026-345761

fkie_cve-2024-36904

In the Linux kernel, the following vulnerability has been resolved:

tcp: Use refcount_inc_not_zero() in tcp_twsk_unique().

Anderson Nascimento reported a use-after-free splat in tcp_twsk_unique() with nice analysis.

Since commit ec94c2696f0b ("tcp/dccp: avoid one atomic operation for timewait hashdance"), inet_twsk_hashdance() sets TIME-WAIT socket's sk_refcnt after putting it into ehash and releasing the bucket lock.

Thus, there is a small race window where other threads could try to reuse the port during connect() and call sock_hold() in tcp_twsk_unique() for the TIME-WAIT socket with zero refcnt.

If that happens, the refcnt taken by tcp_twsk_unique() is overwritten and sock_put() will cause underflow, triggering a real use-after-free somewhere else.

To avoid the use-after-free, we need to use refcount_inc_not_zero() in tcp_twsk_unique() and give up on reusing the port if it returns false.

[0]: refcount_t: addition on 0; use-after-free. WARNING: CPU: 0 PID: 1039313 at lib/refcount.c:25 refcount_warn_saturate+0xe5/0x110 CPU: 0 PID: 1039313 Comm: trigger Not tainted 6.8.6-200.fc39.x86_64 #1 Hardware name: VMware, Inc. VMware20,1/440BX Desktop Reference Platform, BIOS VMW201.00V.21805430.B64.2305221830 05/22/2023 RIP: 0010:refcount_warn_saturate+0xe5/0x110 Code: 42 8e ff 0f 0b c3 cc cc cc cc 80 3d aa 13 ea 01 00 0f 85 5e ff ff ff 48 c7 c7 f8 8e b7 82 c6 05 96 13 ea 01 01 e8 7b 42 8e ff <0f> 0b c3 cc cc cc cc 48 c7 c7 50 8f b7 82 c6 05 7a 13 ea 01 01 e8 RSP: 0018:ffffc9…

ICSA-23-348-10 — Siemens SIMATIC S7-1500

expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE. shadow: TOCTOU (time-of-check time-of-use) race condition when copying and removing directory trees run-mailcap in the Debian mime-support package before 3.52-1+deb7u1 allows context-dependent attackers to execute arbitrary commands via shell metacharacters in a filename. In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9 Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to cause a denial of service (crash) via a crafted bzip2 file, related to block ends set to before the start o…

OESA-2024-2029 — kernel security update

Affected: openEuler:22.03-LTS-SP3: kernel

The Linux Kernel, the operating system core itself. Security Fix(es): 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…

RHSA-2024:4583 — Red Hat Security Advisory: kernel security update

kernel: ethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port() kernel: net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg kernel: vt: fix memory overlapping when deleting chars in the buffer kernel: can: j1939: prevent deadlock by changing j1939_socks_lock to rwlock kernel: mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index kernel: net/mlx5e: Use a memory barrier to enforce PTP WQ xmit submission tracking occurs after populating the metadata_map kernel: netfilter: nf_tables: use timestamp to check for set element timeout kernel: nvme: fix reconnection fail due to reserved tag allocation kernel: net: ena: Fix incorrect descriptor free behavior kernel: netfilter: tproxy: bail out if IP has been disabled on the device kernel: TIPC message reassembly use-after-free remote code execution vulnerability kernel: tcp: Use refcount_inc_not_zero() in tcp_twsk_unique(). kernel: octeontx2-af: avoid off-by-one read from userspace kernel: lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure kernel: r8169: Fix possible ring buffer corruption on fragmented Tx packets. kernel: net: micrel: Fix receiving the timestamp in the frame for lan8841 kernel: blk-cgroup: fix list corruption from resetting io stat

RHSA-2024:4823 — Red Hat Security Advisory: kernel security update

kernel: can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv kernel: vmwgfx: integer overflow in vmwgfx_execbuf.c kernel: vmwgfx: use-after-free in vmw_cmd_res_check kernel: vmwgfx: use-after-free in vmw_execbuf_tie_context kernel: net: amd-xgbe: Fix skb data length underflow kernel: vmwgfx: reference count issue leads to use-after-free in surface handling kernel: vmwgfx: race condition leading to information disclosure vulnerability kernel: vmwgfx: double free within the handling of vmw_buffer_object objects kernel: smb: client: fix potential OOBs in smb2_parse_contexts() kernel: uio: Fix use-after-free in uio_open kernel: intel: Fix NULL pointer dereference issue in upi_fill_topology() kernel: Bluetooth: hci_codec: Fix leaking content of local_codecs kernel: net: bridge: data races indata-races in br_handle_frame_finish() kernel: sched/psi: Fix use-after-free in ep_remove_wait_queue() kernel: scsi: ibmvfc: Remove BUG_ON in the case of an empty event pool kernel: blk-cgroup: Reinit blkg_iostat_set after clearing in blkcg_reset_stats() kernel: stack overflow problem in Open vSwitch kernel module leading to DoS kernel: nftables: nft_set_rbtree skip end interval element from gc kernel: netfilter: nft_limit: reject configurations that cause integer overflow kernel: hv_netvsc: Fix race condition between netvsc_probe and netvsc_remove kernel: ext4: fix double-free of blocks due to wrong extents moved_len kernel: net/sched: act_mirred: don't override retval if we al…

SSA-265688 — SSA-265688: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP V1.1

An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat. fs/nfsd/trace.h in the Linux kernel before 5.13.4 might allow remote attackers to cause a denial of service (out-of-bounds read in strlen) by sending NFS traffic when the trace event framework is being used for nfsd. SUNRPC: null pointer dereference in svc_rqst_free(). When alloc_pages_node() returns null in svc_rqst_alloc(), the null rq_scratch_page pointer will be dereferenced when calling put_page() in svc_rqst_free(). NFSD: READDIR buffer overflow. If a client sends a READDIR count argument that is too small (say, zero), then the buffer size calculation in the new init_dirlist helper functions results in an underflow, allowing the XDR stream functions to write beyond the actual buffer. This calculation has always been suspect. NFSD has never sanity- checked the READDIR count argument, but the old entry encoders managed the problem correctly. With the commits below, entry encoding changed, exposing the underflow to the pointer arithmetic in xdr_reserve_space(). Modern NFS clients attempt to retrieve as much data as possible for each READDIR request. nfsd: NULL dereference in nfs3svc_encode_getaclres. A NULL pointer dereference vulnerability…

SUSE-SU-2024:2362-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2024-36904

Affected: Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux-aws-5.0, Ubuntu:18.04:LTS: linux-aws-5.3, Ubuntu:Pro:18.04:LTS: linux-aws-5.4, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:Pro:18.04:LTS: linux-azure-5.4, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3 and 157 more

In the Linux kernel, the following vulnerability has been resolved: tcp: Use refcount_inc_not_zero() in tcp_twsk_unique(). Anderson Nascimento reported a use-after-free splat in tcp_twsk_unique() with nice analysis. Since commit ec94c2696f0b ("tcp/dccp: avoid one atomic operation for timewait hashdance"), inet_twsk_hashdance() sets TIME-WAIT socket's sk_refcnt after putting it into ehash and releasing the bucket lock. Thus, there is a small race window where other threads could try to reuse the port during connect() and call sock_hold() in tcp_twsk_unique() for the TIME-WAIT socket with zero refcnt. If that happens, the refcnt taken by tcp_twsk_unique() is overwritten and sock_put() will cause underflow, triggering a real use-after-free somewhere else. To avoid the use-after-free, we need to use refcount_inc_not_zero() in tcp_twsk_unique() and give up on reusing the port if it returns false. [0]: refcount_t: addition on 0; use-after-free. WARNING: CPU: 0 PID: 1039313 at lib/refcount.c:25 refcount_warn_saturate+0xe5/0x110 CPU: 0 PID: 1039313 Comm: trigger Not tainted 6.8.6-200.fc39.x86_64 #1 Hardware name: VMware, Inc. VMware20,1/440BX Desktop Reference Platform, BIOS VMW201.00V.21805430.B64.2305221830 05/22/2023 RIP: 0010:refcount_warn_saturate+0xe5/0x110 Code: 42 8e ff 0f 0b c3 cc cc cc cc 80 3d aa 13 ea 01 00 0f 85 5e ff ff ff 48 c7 c7 f8 8e b7 82 c6 05 96 13 ea 01 01 e8 7b 42 8e ff <0f> 0b c3 cc cc cc cc 48 c7 c7 50 8f b7 82 c6 05 7a 13 ea 01 01 e8 RSP: 0018:ffffc90006b43…

WID-SEC-W-2024-1259 — Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service und unspezifischen Angriff

Ein lokaler Angreifer kann mehrere Schwachstellen im Linux-Kernel ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen oder einen unspezifischen Angriff durchzuführen.