Bug 19705

(In reply to David Walser from comment #0)
> Upstream has released version 1.8.0 on October 25:
> https://www.libssh2.org/mail/libssh2-devel-archive-2016-10/0006.shtml
> 
> Fedora has updated to it on October 26:
> https://lists.fedoraproject.org/archives/list/package-announce@lists.
> fedoraproject.org/thread/FJNLGSU3DLXEIZLDDXWYPA6Q26HZH4W3/
> 
> I'm not sure if it improves on the initial fix for CVE-2016-0787 (Bug 17813).
> 
> Perhaps we should update it.

Assigning to all packagers collectively, since there is no registered maintainer for this package.
Also CC'ing some committers.

CC: (none) => marja11, pterjan, thierry.vignaud
Assignee: bugsquad => pkg-bugs

Updated to 1.8.0 in Cauldron by Guillaume.

Version: Cauldron => 6
CC: (none) => guillomovitch

Package        : libssh2
Version        : 1.4.3-4.1+deb8u6
CVE ID         : CVE-2019-17498
Debian Bug     : 943562


In libssh2, SSH_MSG_DISCONNECT logic in packet.c has an integer
overflow in a bounds check, enabling an attacker to specify an
arbitrary (out-of-bounds) offset for a subsequent memory read. A
crafted SSH server may be able to disclose sensitive information or
cause a denial of service condition on the client system when a user
connects to the server

For Debian 8 "Jessie", this problem has been fixed in version
1.4.3-4.1+deb8u6.

CC: (none) => zombie.ryushu

Package        : linux-4.9
Version        : 4.9.189-3+deb9u2~deb8u1
CVE ID         : CVE-2018-12207 CVE-2019-0154 CVE-2019-0155 CVE-2019-11135

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service, or information
leak.

CVE-2018-12207

    It was discovered that on Intel CPUs supporting hardware
    virtualisation with Extended Page Tables (EPT), a guest VM may
    manipulate the memory management hardware to cause a Machine Check
    Error (MCE) and denial of service (hang or crash).

    The guest triggers this error by changing page tables without a
    TLB flush, so that both 4 KB and 2 MB entries for the same virtual
    address are loaded into the instruction TLB (iTLB).  This update
    implements a mitigation in KVM that prevents guest VMs from
    loading 2 MB entries into the iTLB.  This will reduce performance
    of guest VMs.

    Further information on the mitigation can be found at
    
    or in the linux-doc-4.9 package.

    Intel's explanation of the issue can be found at
    ;.

CVE-2019-0154

    Intel discovered that on their 8th and 9th generation GPUs,
    reading certain registers while the GPU is in a low-power state
    can cause a system hang.  A local user permitted to use the GPU
    can use this for denial of service.

    This update mitigates the issue through changes to the i915
    driver.

    The affected chips (gen8 and gen9) are listed at
    ;.

CVE-2019-0155

    Intel discovered that their 9th generation and newer GPUs are
    missing a security check in the Blitter Command Streamer (BCS).  A
    local user permitted to use the GPU could use this to access any
    memory that the GPU has access to, which could result in a denial
    of service (memory corruption or crash), a leak of sensitive
    information, or privilege escalation.

    This update mitigates the issue by adding the security check to
    the i915 driver.

    The affected chips (gen9 onward) are listed at
    ;.

CVE-2019-11135

    It was discovered that on Intel CPUs supporting transactional
    memory (TSX), a transaction that is going to be aborted may
    continue to execute speculatively, reading sensitive data from
    internal buffers and leaking it through dependent operations.
    Intel calls this "TSX Asynchronous Abort" (TAA).

    For CPUs affected by the previously published Microarchitectural
    Data Sampling (MDS) issues (CVE-2018-12126, CVE-2018-12127,
    CVE-2018-12130, CVE-2019-11091), the existing mitigation also
    mitigates this issue.

    For processors that are vulnerable to TAA but not MDS, this update
    disables TSX by default.  This mitigation requires updated CPU
    microcode.  An updated intel-microcode package (only available in
    Debian non-free) will be provided via a future DLA.  The updated
    CPU microcode may also be available as part of a system firmware
    ("BIOS") update.

    Further information on the mitigation can be found at
    
    or in the linux-doc-4.9 package.

    Intel's explanation of the issue can be found at
    ;.

For Debian 8 "Jessie", these problems have been fixed in version
4.9.189-3+deb9u2~deb8u1.

We recommend that you upgrade your linux-4.9 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

-- 
Ben Hutchings - Debian developer, member of kernel, installer and LTS teams

(In reply to Zombie Ryushu from comment #4)
> Package        : linux-4.9
> Version        : 4.9.189-3+deb9u2~deb8u1
> CVE ID         : CVE-2018-12207 CVE-2019-0154 CVE-2019-0155 CVE-2019-11135
> 
> Several vulnerabilities have been discovered in the Linux kernel that
> may lead to a privilege escalation, denial of service, or information
> leak.
> 
> CVE-2018-12207
> 
>     It was discovered that on Intel CPUs supporting hardware
>     virtualisation with Extended Page Tables (EPT), a guest VM may
>     manipulate the memory management hardware to cause a Machine Check
>     Error (MCE) and denial of service (hang or crash).
> 
>     The guest triggers this error by changing page tables without a
>     TLB flush, so that both 4 KB and 2 MB entries for the same virtual
>     address are loaded into the instruction TLB (iTLB).  This update
>     implements a mitigation in KVM that prevents guest VMs from
>     loading 2 MB entries into the iTLB.  This will reduce performance
>     of guest VMs.
> 
>     Further information on the mitigation can be found at
>     
>     or in the linux-doc-4.9 package.
> 
>     Intel's explanation of the issue can be found at
>     ;.
> 
> CVE-2019-0154
> 
>     Intel discovered that on their 8th and 9th generation GPUs,
>     reading certain registers while the GPU is in a low-power state
>     can cause a system hang.  A local user permitted to use the GPU
>     can use this for denial of service.
> 
>     This update mitigates the issue through changes to the i915
>     driver.
> 
>     The affected chips (gen8 and gen9) are listed at
>     ;.
> 
> CVE-2019-0155
> 
>     Intel discovered that their 9th generation and newer GPUs are
>     missing a security check in the Blitter Command Streamer (BCS).  A
>     local user permitted to use the GPU could use this to access any
>     memory that the GPU has access to, which could result in a denial
>     of service (memory corruption or crash), a leak of sensitive
>     information, or privilege escalation.
> 
>     This update mitigates the issue by adding the security check to
>     the i915 driver.
> 
>     The affected chips (gen9 onward) are listed at
>     ;.
> 
> CVE-2019-11135
> 
>     It was discovered that on Intel CPUs supporting transactional
>     memory (TSX), a transaction that is going to be aborted may
>     continue to execute speculatively, reading sensitive data from
>     internal buffers and leaking it through dependent operations.
>     Intel calls this "TSX Asynchronous Abort" (TAA).
> 
>     For CPUs affected by the previously published Microarchitectural
>     Data Sampling (MDS) issues (CVE-2018-12126, CVE-2018-12127,
>     CVE-2018-12130, CVE-2019-11091), the existing mitigation also
>     mitigates this issue.
> 
>     For processors that are vulnerable to TAA but not MDS, this update
>     disables TSX by default.  This mitigation requires updated CPU
>     microcode.  An updated intel-microcode package (only available in
>     Debian non-free) will be provided via a future DLA.  The updated
>     CPU microcode may also be available as part of a system firmware
>     ("BIOS") update.
> 
>     Further information on the mitigation can be found at
>     
>     or in the linux-doc-4.9 package.
> 
>     Intel's explanation of the issue can be found at
>     ;.
> 
> For Debian 8 "Jessie", these problems have been fixed in version
> 4.9.189-3+deb9u2~deb8u1.
> 
> We recommend that you upgrade your linux-4.9 packages.
> 
> Further information about Debian LTS security advisories, how to apply
> these updates to your system and frequently asked questions can be
> found at: https://wiki.debian.org/LTS
> 
> -- 
> Ben Hutchings - Debian developer, member of kernel, installer and LTS teams

I didn't mean to attach this on that bug.

Mageia 6 is EOL.

Zombie, *please* stop copy-pasting advisories, just provide links.

Resolution: (none) => OLD
Status: NEW => RESOLVED