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Sicherheitslücken in linux-lowlatency-hwe-6.8 · Seite 151

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für linux-lowlatency-hwe-6.8: 813. Davon im KEV-Katalog: 0.

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  1. CVE-2026-72247

    Hoch · CVSS 7.5EPSS 0,7%Keine Korrektur veröffentlicht

    netfilter: nf_conncount: fix zone comparison in tuple dedup

    In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conncount: fix zone comparison in tuple dedup The "already exists" dedup logic in __nf_conncount_add() decides whether a connection has already been counted and can be skipped instead of incrementing the connlimit count. It compares the conntrack zone of a list entry with the zone of the connection being added using nf_ct_zone_id() and nf_ct_zone_equal(), passing conn->zone.dir or zone->dir as the direction argument. Those helpers take enum ip_conntrack_dir values: IP_CT_DIR_ORIGINAL is 0 and IP_CT_DIR_REPLY is 1. However, zone->dir is a u8 bitmask: NF_CT_Z

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  2. CVE-2026-72245

    Nicht bewertetEPSS 0,23%Keine Korrektur veröffentlicht

    gpu: host1x: Fix device reference leak in host1x_device_parse_dt() error path

    In the Linux kernel, the following vulnerability has been resolved: gpu: host1x: Fix device reference leak in host1x_device_parse_dt() error path After device_initialize(), the embedded struct device in struct host1x_device should be released through the device core with put_device(). In host1x_device_add(), if host1x_device_parse_dt() fails, the current error path frees the object directly with kfree(device). That bypasses the normal device lifetime handling and leaks the reference held on the embedded struct device. The issue was identified by a static analysis tool I developed and confirmed by manual review. Fix this by using put_devi

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  3. CVE-2026-72244

    Hoch · CVSS 7.8EPSS 0,16%Keine Korrektur veröffentlicht

    gpu/buddy: bail out of try_harder when alignment cannot be honoured

    In the Linux kernel, the following vulnerability has been resolved: gpu/buddy: bail out of try_harder when alignment cannot be honoured The try_harder contiguous fallback could return a range whose start offset did not match the caller's min_block_size. When a candidate's start is misaligned, realign it: free the misaligned run and reallocate exactly @size at the next lower min_block_size boundary. This keeps the returned size unchanged with no surplus to trim, and rejects the request only when no aligned candidate fits. v2: align misaligned candidates down to min_block_size instead of bailing out, for both the RHS and LHS paths (Matth

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  4. CVE-2026-72243

    Hoch · CVSS 8.4EPSS 0,17%Keine Korrektur veröffentlicht

    selinux: check connect-related permissions on TCP Fast Open

    In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are checked when using TCP Fast Open. Update its socket_sendmsg() hook to call selinux_socket_connect() when MSG_FASTOPEN is passed.

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  5. CVE-2026-72242

    Hoch · CVSS 7.5EPSS 0,7%Keine Korrektur veröffentlicht

    selinux: avoid sk_socket dereference in selinux_sctp_bind_connect()

    In the Linux kernel, the following vulnerability has been resolved: selinux: avoid sk_socket dereference in selinux_sctp_bind_connect() selinux_sctp_bind_connect() dereferences sk->sk_socket to pass a struct socket * to selinux_socket_bind() and selinux_socket_connect_helper(). However, when the hook is invoked from the ASCONF softirq path (sctp_process_asconf), there is no file reference guaranteeing that sk->sk_socket is non-NULL. The setsockopt callers (bindx, connectx, set_primary, sendmsg connect) hold a file reference and are not affected. Both selinux_socket_bind() and selinux_socket_connect_helper() immediately resolve sock->sk,

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  6. CVE-2026-72241

    Nicht bewertetEPSS 0,22%Keine Korrektur veröffentlicht

    leds: uleds: Fix potential buffer overread

    In the Linux kernel, the following vulnerability has been resolved: leds: uleds: Fix potential buffer overread The name string supplied by userspace is not guaranteed to be null-terminated, so using strchr() on it might result in a buffer overread. The same thing will happen when said string is used by the LED class device. Fix this by using strnchr() instead and explicitly check that the name string is properly null-terminated.

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  7. CVE-2026-72240

    Nicht bewertetEPSS 0,22%Keine Korrektur veröffentlicht

    mfd: sm501: Fix reference leak on failed device registration

    In the Linux kernel, the following vulnerability has been resolved: mfd: sm501: Fix reference leak on failed device registration When platform_device_register() fails in sm501_register_device(), the embedded struct device in pdev has already been initialized by device_initialize(), but the failure path only reports the error and returns without dropping the device reference for the current platform device: sm501_register_device() -> platform_device_register(pdev) -> device_initialize(&pdev->dev) -> setup_pdev_dma_masks(pdev) -> platform_device_add(pdev) This leads to a reference leak when platform_device_registe

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  8. CVE-2026-72238

    Nicht bewertetEPSS 0,22%Keine Korrektur veröffentlicht

    x86/boot: Validate console=uart8250 baud rate to fix early boot hang

    In the Linux kernel, the following vulnerability has been resolved: x86/boot: Validate console=uart8250 baud rate to fix early boot hang When the baud rate is empty, 0, invalid, or overflows to 0 when stored as an int, the system will hang during early boot because of a division by zero in early_serial_init(). Fall back to DEFAULT_BAUD when the resulting baud rate is 0 to prevent an early system hang.

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  9. CVE-2026-72237

    Nicht bewertetEPSS 0,21%Keine Korrektur veröffentlicht

    perf/x86/amd/brs: Fix kernel address leakage

    In the Linux kernel, the following vulnerability has been resolved: perf/x86/amd/brs: Fix kernel address leakage A user-only branch stack can contain branches that originate from the kernel. As a result, kernel addresses are exposed to user space even when PERF_SAMPLE_BRANCH_USER is requested. On AMD processors supporting X86_FEATURE_BRS (Zen 3 only), perf can still report entries such as SYSRET/interrupt returns for which the branch-from addresses are in the kernel. E.g. $ perf record -j any,u -c 4000 -e branch-brs -o - -- \ perf bench syscall basic --loop 1000 | \ perf script -i - -F brstack|tr ' ' '\n'| \ grep

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  10. CVE-2026-72236

    Mittel · CVSS 5.7EPSS 0,23%Keine Korrektur veröffentlicht

    s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init()

    In the Linux kernel, the following vulnerability has been resolved: s390/perf_cpum_cf: Add missing array_index_nospec() to __hw_perf_event_init() ev variable is userspace controlled via event->attr.config and used as an array index after bounds checking, but without speculation barriers. Add the missing array_index_nospec() call to prevent speculative execution.

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  11. CVE-2026-72235

    Hoch · CVSS 8.8EPSS 0,34%Keine Korrektur veröffentlicht

    batman-adv: retrieve ethhdr after potential skb realloc on RX

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: retrieve ethhdr after potential skb realloc on RX pskb_may_pull() in batadv_interface_rx() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free. This was done correctly for the VLAN header but missed for the ethernet header which is later used for the TT and AP isolation handling.

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  12. CVE-2026-72234

    Kritisch · CVSS 9.8EPSS 0,73%Keine Korrektur veröffentlicht

    batman-adv: access unicast_ttvn skb->data only after skb realloc

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: access unicast_ttvn skb->data only after skb realloc The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free. This was done correctly for the ethernet header but missed for the unicast_packet pointer.

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  13. CVE-2026-72233

    Hoch · CVSS 8.8EPSS 0,34%Keine Korrektur veröffentlicht

    batman-adv: bla: reacquire gw address after skb realloc

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: reacquire gw address after skb realloc The pskb_may_pull() called by batadv_bla_is_backbone_gw() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free.

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  14. CVE-2026-72232

    Hoch · CVSS 7.8EPSS 0,16%Keine Korrektur veröffentlicht

    batman-adv: ensure minimal ethernet header on TX

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: ensure minimal ethernet header on TX As documented in commit 8bd67ebb50c0 ("net: bridge: xmit: make sure we have at least eth header len bytes"), it is possible by for a local user with eBPF TC hook access to attach a tc filter which truncates the packet and redirects to an batadv interface. But the code assumes that at least ETH_HLEN bytes are available and thus might read outside of the available buffer. The batadv_interface_tx() must therefore always check itself if enough data is available for the ethernet header and don't rely on min_header_len.

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  15. CVE-2026-72231

    Hoch · CVSS 7.5EPSS 0,68%Keine Korrektur veröffentlicht

    batman-adv: tt: avoid request storms during pending request

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: avoid request storms during pending request batadv_send_tt_request() allocates a tt_req_node when none exists for the destination originator node. This should prevent that a multiple TT requests are send at the same time to an originator. But if allocation of the send buffer failed, this request must be cleaned up again. But indicator for such a failure is "ret == false". But the actual implementation is checking for "ret == true". The check must be inverted to not loose the information about the TT request directly after it was attempted to be sent out. T

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  16. CVE-2026-72230

    Nicht bewertetEPSS 0,22%Keine Korrektur veröffentlicht

    batman-adv: frag: free unfragmentable packet

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: free unfragmentable packet The caller of batadv_frag_send_packet() assume that the skb provided to the function are always consumed. But the pre-check for an empty payload or the zero fragment size returned an error without any further actions. A failed pre-check must use the same error handling code as the rest of the function.

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  17. CVE-2026-72229

    Nicht bewertetEPSS 0,22%Keine Korrektur veröffentlicht

    batman-adv: clean untagged VLAN on netdev registration failure

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: clean untagged VLAN on netdev registration failure When an mesh interface is registered, it creates an untagged struct batadv_meshif_vlan on top of it via the NETDEV_REGISTER notifier. But in this process, another receiver of this notification can veto the registration. The netdev registration will be aborted because of this veto. The register_netdevice() call will try to clean up the net_device using unregister_netdevice_queue() - which only uses the .priv_destructor to free private resources. In this situation, .dellink will not be called. The cleanup of the

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  18. CVE-2026-72228

    Nicht bewertetEPSS 0,22%Keine Korrektur veröffentlicht

    batman-adv: frag: fix primary_if leak on failed linearization

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: fix primary_if leak on failed linearization If the skb has a frag_list, it must be linearized before it can be split using skb_split(). But when this step failed, it must not only free the skb but also take care of the reference to the already found primary_if.

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  19. CVE-2026-72227

    Hoch · CVSS 8.1EPSS 0,33%Keine Korrektur veröffentlicht

    batman-adv: mcast: avoid OOB read of num_dests header

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: mcast: avoid OOB read of num_dests header Before the access to struct batadv_tvlv_mcast_tracker's num_dests, it is attempted to check whether enough space is actually in the network header. But instead of using offsetofend() to check for the whole size (2) which must be accessible, offsetof() of is called. The latter is always returning 0. The comparison with the network header length will always return that enough data is available - even when only 1 or 0 bytes are accessible. Instead of using offsetofend(), use the more common check for the whole header.

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  20. CVE-2026-72226

    Kritisch · CVSS 9.8EPSS 0,76%Keine Korrektur veröffentlicht

    batman-adv: tt: prevent TVLV OOB check overflow

    In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16 used to store the tt_vlan_len. All additional safety checks to prevent out-of-bounds access of the TVLV buffer are invalid due to this overflow. Using size_t prevents this overflow and ensures that the safety checks compare against the actual buffer requirements.

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